Consider the function f(x) = 3x. which statement must be true?
a)
f(3)
f(1)
=
f(6)
f(4)
b) f(3)·f(1) = f(6)·f(4)
c) f(3) − f(1) = f(6) − f(4)
d) f(3) − f(1) = f(−3) − f(−1)

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?