If f(x) is an exponential function where f(5) = 3 and f(12.5) = 67, then find the value of f(22.5), to the nearest
hundredth.

7x+8y=-18, 4x-9y=-3 solve the system of equations

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?