What is the percent change of 80 to 64

in order to qualify for her High School honor roll Janet must have a test average of 90 as of right now she has test scores of 88, 94, 81, 96, and 82. She has on test left this marking period.

A business has $11,080 to spend on new laptops and tablet computers for its salespeople. The laptops cost $515 each. The tablets cost $285 each. The business wants each salesperson to have either a laptop or a tablet. There are 30 salespeople.

Jeff takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long? A. 6 B. 8 C. 10 D. 12 E. 14

I need to graph these polynomial showing all steps : F (x) = x^4 - 3x^3 - 4x^2

A bag contains and 9 metal balls, 10 hollow balls, 4 glass balls and 18 plastic balls. What is the probability of choosing a glass or hollow ball? 1. 35.4% 2. 34.1% 3. 24.6% 4. 38.9%

What is the factored form of the polynomial? x2 + 9x + 20 (x - 4) (x - 5) (x - 2) (x - 10) (x + 4) (x + 5) (x + 2) (x + 10)

290 pennies are equal to how many dimes

How can I teach surface area better?

What is the pi of S = (Πr^2) + (2Πr) h

If you have 12 friends and make three equal teams, what fraction do you use?