Pls help logarithms make no sense to me

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)