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# Story problem

A square has an area of 4x^2+12xy+9y^2 square meters. What is the perimeter of the square?

# Story problem

A model rocket is shot into the air from ground level with the upward velocity of 80 feet per second. Find the time taken by the rocket to reach the height of 96 feet.

# word problem

Henry has \$15,000 to invest.  He invests x dollars at 4% and the rest at 3.5%.  Suppose at the end of the year Henry has \$15,575.  How much money did he start with in each account?

# Substitution Word Problem

Shelby and Calvin need 5 ounces of a solution that is 65% acid and 35% distilled water.  They have 2 flasks of diluted acid: Flask A contains 70% acid and 30% distilled water, Flask B contains 20%...

# Writing expressions

The average # of tea drinkers in the year 2000 was 12.5 million and the average # of coffee drinkers was 16 million.  During the next 3 years, the # of tea drinkers would increase an average of 5...

# How to solve this word problem with an equation?

During an evening out, Dean paid a cab driver \$20. He then spent \$25 on dinner and half of his remaining money on a painting. He brought an umbrella fro \$23.75 and had \$42.15 left. How much money...

# rate of planes flying in opposite directions at different speeds

Two airplanes leave the airport at the same time, traveling in opposite directions. One plane travels 30 mph faster than the other. After 3 hours, the planes are 3150 miles apart. What is the rate...

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