Gianna is substituting t = 2 and t = 7 to determine if the two expressions are equivalent. 5(2t+3) 5t+25 which statement is true? a. both expressions are equivalent to 35 when t=2. b. both expressions are equivalent to 85 when t=7 c. both expressions are equivalent to 60 when t=7 d. the expressions are equivalent.

A. Both expressions are equivalent to 35 when t=2.

Step-by-step explanation:

Given: Gianna is substituting t = 2 and t = 7 to determine if the two expressions are equivalent.

At t=2

Therefore, both expressions are equivalent to 35 when t=2.

At t=7

Hence, A is the write option.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

answer: 4 (:

step-by-step explanation: