2. A formula is given, along with values for all but one of the variables in the

Question

2. A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.

P = 2L + 2w; P = 22, L = 4

3. A salesperson drove 5 hours. How long will he have driven t hours later?

5. A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.

P = 4s; s = 31

6. On a map of the Fox River, 1 centimeter equals 5 kilometers. If a trail by the river is actually 16 kilometers long, what is the length of the river on the map?

8. 28 yards to 105 yards

9. A label printer prints 5 pages of labels in 3.5 seconds. How long will it take to print 250 pages of labels?

Explanation / Answer

2. P = 2L + 2w

    22 = 2 x 4 + 2w

   14 = 2w

    w = 14/2 = 7

   therefore, w = 7

3. t hours later, he would have driven = ( t + 5 )hrs

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