1. C) 40k + 40l (Multiply 40 by each of the factors in the parentheses and show as an addition expression.)
2. C) -4 (Divide the two numbers.)
3.D) -3
1. C) 40K +40I
Reasoning: It wants the product (Multiplication) of two factors( k and I)
2. C) -4
-14b=56(-14b/-14 and 56/-14)
b=-4
-14(-4)=56
3. D) -3
21=-7n(-7n/-7 and 21/-7)
n=-3
-7(-3)=21