Geometry only answer if you know

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table