Linear Equations/Functions Word Problems

Which of the following is the correct equation to solve the problem given?

Three consecutive integers add up to 279, what are the three integers?

• $3x=279$

• $3x+3=279$

• $3x-3=279$

• $x+3=279$

Tags

CCSS.HSA.CED.A.3

The sum of a number and 5 is multiplied by -3 and the answer is -24. Find the number.

• 13

• -13

• 3

• -3

Tags

CCSS.7.EE.B.4A

Oberon Cell Phone Company advertises service for $0.03 per minute plus a monthly fee of $29.95. If Luke’s phone bill for October was $38.95, find the number of minutes he used.

• 30 minutes

• 300 minutes

• 9 minutes

• 90 minutes

Tags

CCSS.7.EE.B.4A

Savannah opens a savings account with $145. She saves $165 per month. After how many months will she save $2290?

Just type in the number!

Tags

CCSS.7.EE.B.4A

On an algebra test, the highest grade was 15 points higher than the lowest grade. The sum of the two grades was 125. Find the lowest grade. (Number only)

Tags

CCSS.8.EE.C.8C

On an algebra test, the highest grade was 15 points higher than the lowest grade. The sum of the two grades was 125. Find the highest grade. (Number only)

Tags

CCSS.8.EE.C.8C

The length of a rectangular map is 12 inches longer than the width. If the perimeter is 144, what is the width? (Number only!)

The length of a rectangular map is 12 inches longer than the width. If the perimeter is 144, what is the length? (Number only!)

A printing service charges a set-up fee of $11.00 for each order and 5 cents more for each copy. The total cost, C (in dollars), for an order of x copies is given by the following function:

C = 0.05x + 11

What is the total cost for an order of 15 copies?

Tags

CCSS.HSF.LE.B.5

Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. The weight of the plane increases by 6.2 pounds per gallon of fuel in the tank. With 49 gallons of fuel in its tank, the airplane has a weight of 2203.8 pounds. How much does the plane weigh if there is no fuel in the tank?