Exam 4: Equations and Formulas

Solve the problem. -A hardware store spent $13,290 on print and TV advertising last year. If of that amount was spent on print advertising, how much was spent on TV advertising?

Solve the equation. --8 = b - 2

Solve the equation. -d + 30 = -7

Solve the problem. -At a garage sale, the most expensive item was marked $25.00 more than the cheapest item. The sum of the two items was $26.90. Find the cost of the least expensive item.

Solve the equation. -6.2x + 3 = 40.2

Solve the equation. -g - 27.22 = 0

Translate the statement into a mathematical expression. -An employee's salary, s, is increased by $290.

Write the phrase as a mathematical expression. Use x as the variable. -The quotient of some number and 20

Solve the problem. -On a map of the Fox River, 1 centimeter equals 7 kilometers. If a trail by the river is actually 23.8 kilometers long, what is the length of the river on the map?

Write the phrase as a mathematical expression. Use x as the variable. -The difference of some number and 7.9

Determine if the proportion is true or false. -

Solve the problem. -If a spring stretches 0.6 meter when a 3-kilogram weight is attached to it, how much will it stretch when an 8-kilogram weight is attached to it?

Solve the formula for the specified variable. -S = for h

Solve the problem. -A machine can fill 3,169 cartons of milk in 0.5 hour. How many cartons of milk can it fill per hour?

Solve the problem. -Find the interest if $2,400 is borrowed at 8% (or 0.08)for 3 years. (I = PRT)

Solve the proportion. -

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. -

Solve the equation. -

Determine if the proportion is true or false. -

Solve the problem. -Dr. Taylor can see 11 patients in 2 hours. At this rate, how long would it take him to see 66 patients?