40% of b is 65, what is b

Higher Order Thinking A stack of 102 pennies is 6.1 inches tall. A stack of 10 - dimes is 5.3 inches tall. How much taller is a stack of 10 pennies than a stack of 10 dimes?

What is a net in a mathematical equation

Ms. Ford's kitchen is in the shape of a rectangle with a width of 12.25 feet. She is buying a wallpaper border to go on all of her kitchen walls. She wants to buy 5 extra feet of the border to be sure she has enough. She buys 62.5 feet of the border.

Find the sum. 0+3+6 + ... + (3n-3)

How do you solve recursive formulas

a printing press will print 6,000 copies in 20 minutes. A second press can print 15000 copies in 60 minutes. How many more copy per minutes will the faster press print more than the slower press?

Delegates from 10 countries, including Russia, France, England, and the United States, are to be seated in a row.

In 2016, the maximum taxable income for Social Security was $118,500 and the tax rate was 6.2%. If Andrew made 243,000 in 2016, how much did he pay in Social Security tax? I

The price of an item has been reduced by 15%. The original price was $33. What's the price of the item now?

The function f (x) = 12x + 50 gives the amount of money a worker earns for working x hours per week. What is the inverse function?