- For which equation is x = 9 a solution?

Can someone show me the steps to solve the problem?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')