Which expression could you use to find the average rate of change for this function over the given interval. f(x) = 2x2 ? x + 6; [? 2, 3] a) f(2) ? f(3) 3 ? (? 2) b) f(? 2) ? f(3) 2 ? 3 c) f(3) ? f(? 2) 3 ? (? 2) d) ? f(3) ? f(? 2) 3 ? (? 2)

answer:

4+2=7

step-by-step explanation:

paula, cory, and krista

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!