Question

Can someone please do these for me?

Answer 1

Part 1⤵️

$\rm \: y = 100 + 65x \\ \rm y = 40 + 80x$

$\rm 100 + 65x = 40 + 80x$

$\rm \: - 65x + y = 100 \\ \rm \: - 80x - y = - 40$

$\rm \: x = 4$

Now, Substitute the given value of x into the second equation

$\rm y = 40 + 80 \times 4$

$\rm \: y = 360$

The possible solution of the system is the ordered pair (x,y)

$\rm(x,y) = ( 4 , 360 )$

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Part 2 is attached!!

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Part 3⤵️

• To solve this we will need to put the value of x as 3 in both equations and solve for y

$\rm \: y = 100 + 65 \times 3 \\ \rm \: y = 40 + 80 \times 3$

$\rm \: y = 100 + 195 \\ \rm \: y = 295$

$\rm \: y = 40 + 240 \\ \rm \: y= 280$

Therefore, Amy's auto repair shop is cheapest...~