What is g(x) = -10(x-8)" +5 in standard form

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i