Which of the following is a quadratic function?

a. y = x2 - 81

b. y = x4 - 64

c. y = x - 9

d. y = x3 - 27

Jake received $300 for his birthday. He must decide how much of it to save and how much to spend. His bank has a 5% interest rate. How much more would be in his account after 5 years if he saved $300 than if he saved $250?

What is the answer to 5-2x=12

Rewrite csc60° in terms of its cofunction

A toy rocket travels 180 ft in 15 sec. What is the ratio of feet to seconds?

If a circle has a radius of 12 cm and a sector defined by a 120 degree arc, what is the area of the sector?

Determinati numarul b astfel incat : (4x8) ^15 : 4^5:2^6=2^b si 3^4x3^5x3^17=3^b

1/x=6/x+15, 20-x/x=6/4, and 4/12=x+2/2x+13

If a sample of 26 students is taken from a population of 135 students, the population variance, o?, is the variance of how many students' heights? O A. Neither 26 nor 135 B. Both 26 and 135 O c. 135 O D. 26

Robert collected 330 aluminum cans. If 100 aluminum cans weigh 4 pounds, and the recycling center is paying 25 cents a pound, how much will Robert be paid for his 330 cans?

A single box of thumb tacks weighed 3 1/2 ounces. If a teacher had 4 1/7 boxes, how much would their combined weight be