20. determine the rate of change for the following equation on the given interval. f(x) = 2x + 7 on the interval -2 < ( underlined) x < ( underlined) 3 a) 2 b) -2 c) 10 d) -10

-2<x<3   | *2
-4<2x<6       | +7
3< 2x+7< 13

3<10<13

The answer is C

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.