Please help me with this

The table shows the distance traveled over time while traveling at a constant speed.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]