Table 1.9 shows some values of a linear function f and an exponential function g. Find exact values (not decimal approximations) for each of the missing entries of f, and round your answers for g to 3 decimals.

Table1.9 x 0 1 2 3 4

f(x) 15 30

g(x) 15 30

i just really do not know how to do this one...please help

mathlete