Writing Absolute Value Equations

If a runner runs the first leg in 52 seconds, plus or minus 2 seconds, write an equation to find the fastest and slowest times.

• /x + 52/ = 2

• /x - 52/ = 2

• /x - 2/ = 52

• /x + 2/ = 52

Tags

CCSS.HSA.CED.A.3

The average test score was 85, plus or minus 6 points. Write an equation to represent the highest and lowest scores.

• /x + 85/ = 6

• /x + 6/ = 85

• /x - 85/ = 6

• /x - 6/ = 85

Tags

CCSS.HSA.CED.A.3

The average temperature in the winter was -10 degrees, give or take 15 degrees. Write an equation to find the high and low temperatures.

• /t - 15/ = -10

• /t - 15/ = 10

• /t - 10/ = 15

• /t + 10/ = 15

Tags

CCSS.HSA.CED.A.3

A submarine can travel 175 feet below sea level, plus or minus 25 feet. Write an equation to represent this situation.

• /x - 175/ = 25

• /x + 175/ = 25

• /x - 25/ = 175

• /x + 25/ = 175

Tags

CCSS.HSA.CED.A.3

Major League Soccer (MLS) rules state that soccer balls are to be inflated to 13 PSI (Pounds per Square Inch). Prior to each game, the referees check the three game balls. If the game balls are inflated to 1 PSI more or less of the desired weight, they are to approved for use in the game. Which absolute value equation best represents the least and most that the MLS soccer ball weighs?

• |x - 1| = 13

• |x - 13| = 1

• |x + 1| = 13

• |x + 13| = 1