The points (1, 5), (5, 10), (7, 8) and (8, 1) are on the graph of the function p. which expression below gives the average rate of change of the function p on 5 ≤ x ≤ 8?

1. 8-5/7-1

2. 8-5/1-10

3. 7-1/8-5

4.1-10/8-5

3.

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?