Please help me solve this it’s really important

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Suppose you are going to graph the data in the table. minutes temperature (°c) 0 -2 1 1 2 3 3 4 4 5 5 -4 6 2 7 -3 what data should be represented on each axis, and what should the axis increments be? x-axis: minutes in increments of 1; y-axis: temperature in increments of 5 x-axis: temperature in increments of 5; y-axis: minutes in increments of 1 x-axis: minutes in increments of 1; y-axis: temperature in increments of 1 x-axis: temperature in increments of 1; y-axis: minutes in increments of 5

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25