4. Write each number as a product of prime factors. Number
Product of Primes
a. 30
b. 12
c. 26
d. 36
e. 250

a. 30 = 2×3×5

b. 12 = 2×2×3

c. 26 = 2×13

d. 36 = 2×2×3×3

e. 250 = 2×5×5×5

Step-by-step explanation:  If it's an even number, divide by 2. keep dividing by 2 until the number is no longer even. Then try the next prime number, 3, then 5, 7, 11, 13 . . .  

Any number that can't be divided evenly by a smaller prime number is a prime number.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4