Which ratio is equal to 27 : 81? A. 1 : 9
B. 2 : 9
C. 3 : 9
D. 3 : 27
E. 9 : 12

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?