76.8 % of what number is 40.32?

A bank PIN is a string of four digits, each digit 0-9. (a) How many choices are there for a PIN if the last digit must be odd? Make sure to explain your answer.

Suppose that y varies inversely with x, and y = 0.2 when x = 2. What is an equation for the inverse variation?

Tims quiz grades for the marking period are 75 83 78 94 and 70 he score a 63 on his next quiz by how much will his mean score decrease

Bridgette deposited $3,300 in a savings account with simple interest. Six months later, she had earned $165 in interest. What was the interest rate?

In seans fish tank there are 6 times as many goldfish as guppies. there are a total of 21 fish in the tank. how many more goldfish are there than guppis.

What is the range of the dataset 24 79 85 97

Find the perimeter of the figure to the nearest hundredth.

How do you simplify the ratio 28:7

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Your company makes game parts using 3-D printers. One customer wants a circular game coin that is 2.0 centimeters across and 0.5 centimeters thick, as shown below. You need to estimate the amount of plastic you will need for each batch of 50 coins.