Question

Help please

1: For which intervals below is the average rate of change of m(x) = -56(x-3) less than -25?
Interval
A 3 ≤ x ≤ 5
B 4 ≤ x ≤ 5
C 4 ≤ x ≤ 6

Option a: Interval A only
Option b: Interval C only
Option c: Intervals A and B only
Option d: Intervals B and C only

2:Which expression below gives the average rate of change of the function g(x) = -x^(2) - 4x on the interval 6 ≤ x ≤ 8 ?

3: Which formula below gives the average rate of change of the function z(x) = -6^(x+2) + 3 on the interval -1 ≤ x ≤ 2 ?