Charles got a raise from $5.00 an hour to $7.00 an hour. This was a raise of what percent?

A sweater, originally cost $32, is on sale for $28. What is the percent of decrease rounded to nearest whole number?

an amphitheatre has 20 seats in the first row, 22 in the second, 24 in the third, and so on, for 33 rows how many seats are in the amphitheatre

A scale model of an object is 5 inches tall. The actual object is 250 feet tall. What is the scale factor of the model?

The absolute deviation of 1 is the absolute deviation of 2 is the absolute deviation of 5 is

The circumference of a circle if 65π. In terms of pi, what is the area of the circle?

How many five-letter codes can be made if no letter can be used twice? (There are 26 letters in the alphabet.)

How to prove using basic definitions, If xy=xz then y=z

Some species of hummingbirds appear to hover in mid-air by flapping their tiny wings 85 times per second. How many times do their wings flap in one minute?

The area of a square is 25 square units how many units is a diagonal of the square

If there are a number of different sounds being produced simultaneously, the resulting intensity is the sum of the individual intensities. How many decibels louder is the sound of quintuplets crying than the sound of one baby crying?