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Mathematics 10 Online
OpenStudy (anonymous):

Help please. http://prntscr.com/5em1ba @iGreen @mathstudent55 @Destinymasha @radar

OpenStudy (anonymous):

one sec let me figure it out

OpenStudy (igreen):

Use the formula \(f(x) = 0.50x + 30\)

OpenStudy (igreen):

Where x is miles driven.

OpenStudy (igreen):

Plug in 100, 200, 300, and 400 for \(x\) into the equation.

OpenStudy (igreen):

Then solve for \(y\)..that will give you your answer.

OpenStudy (anonymous):

I don't understand @iGreen

OpenStudy (anonymous):

it is the 3rd one

OpenStudy (igreen):

Start with 100. \(f(x) = 0.50(100) + 30\) Multiply \(0.50 \times 100\), then add 30.

OpenStudy (igreen):

@srgntb0$$ Don't give answers.

OpenStudy (mathstudent55):

All options start with 100 miles, so let's figure out the cost of driving 100 miles: Total cost = Fixed Cost + Mile Cost Fixed cost: $30 Mile cost: $0.50 per mile For 100 miles, the cost is $0.50/mile * 100 miles = $50 Total cost for 100 miles: $30 + $50 + $80

OpenStudy (anonymous):

y

OpenStudy (igreen):

It's against the code-of-conduct. http://openstudy.com/code-of-conduct

OpenStudy (igreen):

You're not supposed to give answers, you're supposed to guide people to the answer. Don't give the answer AT ALL.

OpenStudy (igreen):

@iKayla Can you simplify this? \(f(x) = 0.50(100) + 30\)

OpenStudy (mathstudent55):

With this, you can eliminate choices A and C.

OpenStudy (anonymous):

well she already got it so ill follow the lines next time

OpenStudy (anonymous):

obveously henot the one u lookin for

OpenStudy (mathstudent55):

Now let's see how much it costs to drive 200 miles. Fixed cost: $30 Mile cost: $0.50/mile * 200 = $100 Total cost = $30 + $100 = $130 It costs $130 to drive 200 miles. O(f B and D, which choice has $130 for 200 miles?

OpenStudy (anonymous):

B

OpenStudy (igreen):

Yep, you got it.

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