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Mathematics 7 Online
OpenStudy (anonymous):

can someone help with a math question on linear models? I will fan and medal

OpenStudy (anonymous):

The height of a ball when it is thrown into the air is shown by equation h = −16t2 + 20t + 3, where h is the height of the ball and t is time in seconds since the ball was released. A. linear model B. nonlinear model

OpenStudy (anonymous):

A

OpenStudy (anonymous):

thanks I have more like this, can you help?

OpenStudy (anonymous):

A salesperson’s monthly earnings are shown by the equation e = 1200 + 0.04s, where e represents the salesperson’s monthly earnings and s is her monthly sales. A. linear model B. nonlinear model

OpenStudy (tapha):

a

OpenStudy (anonymous):

@hungergames13 do you know this?

OpenStudy (hungergames13):

A

OpenStudy (tapha):

i think

OpenStudy (anonymous):

oh thanks :)

OpenStudy (hungergames13):

I am quit sure its A

OpenStudy (tapha):

yeh

OpenStudy (anonymous):

The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation A=500x(0.2)^d, where d is the number of days since the sample weight was 500 g.

OpenStudy (tapha):

fan and medal plz

OpenStudy (tapha):

after this

OpenStudy (anonymous):

A. linear model B. nonlinear model

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

oh, can you give hungergames13 a medal to XD

OpenStudy (tapha):

me sure

OpenStudy (anonymous):

he amount of a 500 g sample of a radioactive substance that remains over time is given by the equation A=500x(0.2)^d, where d is the number of days since the sample weight was 500 g. A. linear model B. nonlinear model

OpenStudy (hungergames13):

I belive it is B

OpenStudy (anonymous):

oops...typo, its The amount XD

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

I have just one more, can you guys help? XD

OpenStudy (hungergames13):

yup

OpenStudy (anonymous):

Mikaela’s distance from home as she drives at a constant rate is given by the equation d = 368 – 42t, where d is her distance from home and t is time in hours. A. linear model B. nonlinear model

OpenStudy (anonymous):

@tapha

OpenStudy (anonymous):

XD thanks a lot guys

OpenStudy (anonymous):

what do you think it is? I think its b...

OpenStudy (hungergames13):

I think A but I could be wrong

OpenStudy (anonymous):

ok...ready for the results?

OpenStudy (hungergames13):

yup

OpenStudy (anonymous):

I got an 80%! YES!

OpenStudy (hungergames13):

YAY!!!!!!!!!!!

OpenStudy (anonymous):

now as I always do... I put answers for people that have tests like me XD

OpenStudy (hungergames13):

:)

OpenStudy (anonymous):

The interest that Julia earns on her investment is given by the equation I = 48t where t is the time in years that her money is invested. She makes a table to determine how much money she would earn for different values of t. She selects 5 as a value for t. What is the corresponding table entry for I? A. 485 --> B. 240 C. 53 D. 9.6

OpenStudy (hungergames13):

your right 240:)

OpenStudy (anonymous):

ya, im just putting the answer for others...

OpenStudy (anonymous):

Calib received $50 for his birthday and put it in his piggy bank. Each week, he puts 2 more dollars in his bank. The amount of money in dollars D in his bank is given by D = 2w + 50, where w is the number of weeks he has saved 2 dollars. His sister Lara makes a table of reasonable values for w. Lara selects 14 as a value for w. What is the corresponding table entry for D? A. 66 --> B. 78 C. 57 D. 264

OpenStudy (anonymous):

The altitude of a plane as it begins to descend is shown by the linear equation a = 22,000 – 800m, where a is the plane’s altitude, in feet, and m is minutes. What is the plane’s altitude when m = 12? {12400 ft}

OpenStudy (anonymous):

The amount of money a plumber charges when visiting a home to make a repair is shown by the linear equation c = 135 + 52h, where c is the amount the plumber charges and h is the number of hours spent at the home. How much does the plumber charge when h = 3.25? {304}

OpenStudy (anonymous):

last one :)

OpenStudy (hungergames13):

:)

OpenStudy (anonymous):

Match each item in Column A to an answer in Column B. Is each situation a linear or a nonlinear model? Column A Column B B. The height of a ball when it is thrown into the air is shown by equation h = −16t2 + 20t + 3, where h is the height of the ball and t is time in seconds since the ball was released. A. A salesperson’s monthly earnings are shown by the equation e = 1200 + 0.04s, where e represents the salesperson’s monthly earnings and s is her monthly sales. B. The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation , where d is the number of days since the sample weight was 500 g. A. Mikaela’s distance from home as she drives at a constant rate is given by the equation d = 368 – 42t, where d is her distance from home and t is time in hours.

OpenStudy (anonymous):

yep on this one we missed number 1, it was b XD

OpenStudy (hungergames13):

ohh ok

OpenStudy (anonymous):

the height of the ball one, ya that one it was b

OpenStudy (anonymous):

but I still passed :D thanks a lot for the help :)

OpenStudy (hungergames13):

your welcome glade you passed :D

OpenStudy (hungergames13):

glad

OpenStudy (anonymous):

thanks again bye

OpenStudy (hungergames13):

bye

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