How do write nine billion, seven hundred million, forty-five thousand, three hundred six in standard form

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.

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

If f(x)=x+7 and g(x)=1/x what is (fog)(x)