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Mathematics 14 Online
OpenStudy (gigi1103):

can someone check my work?

OpenStudy (anonymous):

Sure

OpenStudy (anonymous):

what is it

OpenStudy (gigi1103):

The Mitchells are renting a boat for the day. It costs $100, plus $20 for each hour. They have to pay for a whole hour even if they are not out there for a whole hour. For example if they boat for 3 and a half hours, they have to pay for 4 hours. They don't want to spend more than $250 for the day. How many hours can they boat? Write an inequality and solve. A) 100 + 20x ≤ 250. They can boat for 7 hours. B) 100 + 20x ≥ 250. They can boat for 8 hours. C) 100 + 20x ≤ 250. They can boat for 8 hours. <---- D) 100 + 20x ≥ 250. They can boat for 7 hours.

OpenStudy (gigi1103):

Evaluate the expression by using the given values of the variables. y ÷ 4 • 3 – 6 ÷ x + 8 where x = 3 and y = 24 A) 8 B) 12 C) 24 <--- D) –8

OpenStudy (anonymous):

I think it's correct.

OpenStudy (anonymous):

i wil say a

OpenStudy (gigi1103):

k i have more

OpenStudy (anonymous):

I agree with @mya1234567890

OpenStudy (gigi1103):

wich needs to be a?

OpenStudy (gigi1103):

??

OpenStudy (gigi1103):

@sleepyjess

OpenStudy (gigi1103):

can you help?

OpenStudy (gigi1103):

If Christopher consumed 600 calories by drinking x number of sodas, which expression represents the number of calories in each soda? A) 600x <--- B) 600 + x C) 600 x D) x 600

OpenStudy (sleepyjess):

For the first one, they have a straight fee of $100, so they have $150 left to spend on actually being on the boat. How many times does 20 go into 150?

OpenStudy (gigi1103):

7.5?

OpenStudy (anonymous):

sorry sweet i was helping someone

OpenStudy (sleepyjess):

Yes, but, if they went on the boat for 7.5 hours, they would have to pay for 8 hours, and that would be $160

OpenStudy (gigi1103):

oh thanks!!

OpenStudy (sleepyjess):

So they'd only be able to go on the boat for 7 hours :)

OpenStudy (gigi1103):

so a?

OpenStudy (sleepyjess):

Yep :)

OpenStudy (gigi1103):

thanks tons!!

OpenStudy (sleepyjess):

#2 y ÷ 4 • 3 – 6 ÷ x + 8 where x = 3 and y = 24 24/4 * 3 - 6/3 + 8 Use PEMDAS 24/4 = 6 6 * 3 - 6/3 + 8 6 * 3 = 18 18 - 6/3 + 8 6/3 = 2 18 - 2 + 8 18 - 2 = 16 16 + 8 16 + 8 = 24 24

OpenStudy (sleepyjess):

And I agree on the 3rd one also :)

OpenStudy (gigi1103):

k

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