Please help me with this question:

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons

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

Is a square always, sometimes, or never a parallelogram