Is the data set approximately periodic? If so, what are its period and amplitude?

not periodic
O
periodic with period of 3 and amplitude of about 7.5
periodic with period of 3 and amplitude of about 15
periodic with period of 4 and amplitude of about 7.5

Can somebody me out with this question

The graph of f(x), shown below, resembles the graph of g(x) = x2, but it has been changed somewhat. which of the following could be the equation of f(x)?

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.