Maria has 8n-30 marbles, her brother has 5n marbles. How many more marbles does Maria have than her brother

What is 1/4 * 1/4*1/4*1/4

A family member has some five-dollar bills and one-dollar bills in her wallet. Altogether she has 18 bills and a total of $62

A baseball team had 80 players show up for tryouts last year and this year had 96 players show up for tryouts. Find the percent increase in players from last year to this year.

Mary's bank account was overdrawn by $21. If she deposits $60, find the new balance

A fish has a triangular tooth with the height that is 2 centimeters longer than the base. If the are of the tooth is 12 square centimeters, find its base and height

5.5% tax on a $309.95 purchase

An airplane is traveling 835km/h in a direction 41.5 west of north. Find the components of the velocity vector in the northerly and westernly directions. How far north and how far west has the plane traveled after 2.50h

4. Change the decimal 0.0112 to a fraction.

A sport field is 200 feet long. Write a formula that gives the length L of x sport fields in feet. Then use this formula to determine the number of sport fields in 580 feet.

Mandee is looking for a new car. She has test-driven two cars but can only purchase one. The probability that she will purchase car A is 0.51, and the probability that she will purchase car B is 0.27.