Writing an Equation
Writing inequalities
100

The speed of sound in air is 344 m/s. This is 1,117 m/s slower than the speed of sound in water. 

344 = x -1117

100

write an inequality: The space shuttle can carry more than 38,000 lbs.

s > 38,000

200

A runner's heart rate is 133 beats per minute. This is 62 beats per minute more than his resting heart rate. 

133 = r + 62

200

write an inequality to solve the problem. Then solve the inequality. a 1-ton (1T) truck has the ability to haul 1 T, or 2,000 lb. At most how many refrigerators can the truck carry, if each one weights 320 lb?

320 r ≤ 2,000; at most 6 refrigerators

300

A fitness club advertises a special for new members. Each month of membership costs $19, with an initial enrollment fee of $75. Write an equation for how many months it would take to spend $227.

 19m + 75 = $227

300
Write an inequality and solve. to win the long jump, you need to jump a distance greater than 2.25m. Your personal best jump is 2.1. How much farther do you need to jump to win?
d + 2.1 > 2.25 d > 0.15
400

Write and equation: This season a player scores 6 runs more than three times the number of runs she bats in. She scores 108 runs this season. How many runs does the player bat in?

3b +6 = 108 34 runs

400
write an inequality and solve: A roller coaster can carry 36 people per run. At least how many times does the roller coaster have to run to allow 10,000 people to ride?
36 p ≥ 10,000 278 times
500

six families split the cost of a family reunion. Each family also spends $65 for a hotel room. Each family's share of the cost of the party plus the cost of the hotel room totals $160. Write an equation to find the cost of the reunion.

s/6 + 65 = 160

500

write an inequality and solve. If hot dogs cost $4.75 and peanuts cost $1.25, at most how many bags of peanuts can you buy with $15?

1.25p +4.75 ≤ 15 12

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