Ateacher asked the class to solve the equation 3(x + 2) = 21.
robert wrote 3x + 6 = 21 as his first step. which property did he use?
(1) associative property (3) distributive property
(2) commutative property (4) zero property of addition

3. solve by graphing: y = 2x + 6 x + y = -3

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Which function has an inverse function? a.f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²