Mark sold x pens for $2 each. He received less than $80 from the sale. Find the greatest possible number of pens he sold.

Find the balance in the account after the given period. $2000 principal earning 6 % compounded annually, for 8 years. The balance after 8 years will be $__?

Find the volume for the regular pyramid. Hexagonal height of 6 and sides of 4

What is 7000 10 times much as

The average american is responsible for about 20,000 kilograms of carbon emission pollution each year. Express this number as a single-digit times the power of 10.

Find four fractions between - 2 and - 1/2 written as either improper or mixed number fractions that are repeating decimals

Solve the system of equations. y = x + 6 y = x^2 + 8x + 16

Tiffany is packing her bags for her vacation. She has 8unique toy animals, but only 4fit in her bag. How many different groups of 4 toy animals can she take?

Find the prime factorization of 50 using exponents

Georgetown Theater issued 5,200 tickets last weekend. This weekend, the theater issued 74% fewer tickets. How many tickets to comedies did the theater issue this weekend? 1,343 tickets 1,352 tickets 1,342 tickets 1,354 tickets

A person in a balloon which is 2,000 feet above the airport finds that the angle of depression to a ship out at sea is 21°. Find the horizontal distance between the balloon and the ship.