The quotient of nine times a number and seven

Consider the graph of the exponential function y=3(2)×

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c