(c) Here are two numbers. 15 21
Craig says,
“Both of these number can be written as the product of two prime numbers."
Is Craig correct?
You must show how you get your answer.
(4)

Yes

Step-by-step explanation:

15 = 3*5

21 = 7*3

3, 5 and 7 are all prime numbers.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

table 3 represents a direct variation function. : )