Why do we use variables, and what is the significance of using them in expressions and equations?

A town has a population of 16000 and grows at 4.5% every year. What will be the population after 8 years, to the nearest whole number?

The loudest sound measured one night during a hockey game was 112 dB. The loudest sound measured during a hockey game the next night was 118 dB. What fraction of sound intensity of the second game was the sound intensity of the first game?

An item costs $420 before tax, and the sales tax is $33.60. Find the sales tax rate. Write your answer as a percentage.

Diagonal of the rectangular solid with a height of 3 ft length of 4 ft and width of 5 ft

How do you simplify the radical expression, 24 - sqrt (720 over 4

How many sides does a decagon have? 6 7 8 10

What is the approximate trade-in value of a 15,000 car after 3 years

At a basketball game, a vender sold a combined total of 109 sodas and hot dogs. The number of sodas sold was 57 more than the number of hot dogs sold. Find the number of sodas sold and the number of hot dogs sold

What are the degrees a trapezoid has?

The temperature fell 12°F from 46°Fto 34°F in 10 hours. how much would the temperature fall over 15 hours if the pattern continued