A new eye clinic sold 47 pairs of eyeglasses the first month it was open. The number of pairs of eyeglasses sold increases by 25% each month thereafter. The equation f(x)=47(1.25)^x gives about how many pairs sold in 10th month.

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.