Question

4. Your test scores for the semester are 87, 84, and 85. Can you raise your test average to 90with your next test?DefineEquation:Answer:can i have help on 6?

Answer 1

For this problem we need to define the variable first:

Define: x represent the number of hours used for the task

Equation:

$14x+250=22x$

Solve: Now we just need to solve for x. If we subtract 14x in both sides of the equation we got:

$250=22x-14x=8x$

And now if we divide both sides by 8 we got:

$x=\frac{250}{8}=31.25$

So then finally the answer is: At 32 or more hours Tim's Painting would be a better deal since it would cost less