How can you tell if a number is divisible by 4?

a. the sum of the digits is divisible by 4.
b. the last two digits of the number are divisible by 4.
c. the first digit is 4.
d. the last digit is even.

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?