Answer
(a) $P=100+10 t$.
(b) $P=100(1.10)^t$.
(c) See graph
Work Step by Step
(a) The slope of the line is $m= 10$ and vertical intercept is $b= 100$ Thus, the line is. $P_1=100+10 t$.
(b) This an exponential function with $a= 100$ and $b= 1.10$ Hence, $P_2=100(1.10)^t$.
(c) See graph