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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?

4 Your Test Scores For The Semester Are 87 84 And 85 Can You Raise Your Test Average To 90with Your Next TestDefineEquationAnswercan I Have Help On 6 class=

Sagot :

For this problem we need to define the variable first:

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

Equation:

[tex]14x+250=22x[/tex]

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

[tex]250=22x-14x=8x[/tex]

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

[tex]x=\frac{250}{8}=31.25[/tex]

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

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