What is the average rate of change for ƒ(x) = 2x − 12 over the interval 4 ≤ x ≤ 8?

A) 10
B) 30
C) 60

D) 90

Therefore, the average rate of change is 2.

Step-by-step explanation:

The  average rate of change  of for over the interval will be the slope of the  secant line  connecting the 2 points.

To calculate the average rate of change  of f(x) on the interval [a, b] is:

as

The average rate of change between (4, -4) and (8, 4) will be:

Therefore, the average rate of change is 2.

i believe the answer is letter c) 8

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!