If a = and a is a nonzero integer, which of the following is equivalent to a ?A) 4 a
B) 4
C)
D) 220 .Three different chefs work together to prepare meals for 280 dinner guests. Each works at
a different speed, and their combined output throughout the night is modeled by the
equation 8x + 4x + 2x = 280. If x is a positive integer, which of the following could 8x
represent in the equation?
A) The total meal output by the slowest chef, who made 40 meals.
B) The total meal output by the fastest chef, who made 160 meals.
C) The total meal output by the fastest chef, who made 80 meals.
D) The difference between the output between the slowest and fastest chef, which
would be 120 meals.
21.
The graph, y = f(x), shown above models the performance of a certain crop, where x is the