Under what operations is the system of polynomials NOT closed?

A. Addition

B. Subtraction

C. Multiplication

D. Division

A total of $8000 is invested: part at 7% and the remainder at 11%. How much is invested at each rate if the annual interest is $760?

Joe paid 14.00 for a broard game. THis is 70% of the orginal price. What was the orginal price?

If they are drawn with replacement, what is the probability that both cards are 10s?

Find percent notation 0.488

2.54rounded to nearest tenth

Suppose that textbook weights are normally distributed. You measure 28 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 12.3 ounces.

ABC Bookstore rents a storage space that is 75 ft x 50 ft and 15 ft high. It is charged $2.50 per square foot. How much does ABC Bookstore spend on storage space? O A. $140,625 O B. $9375 O C. $2500 O D. $3750

31/9 as a mixed number

Find 4x when 3x equals 3

Solve 64x3 - 1 = 0.