Question

Precalculus question worth 20 points

Answer 1

Answer:

See the graph.

Step-by-step explanation:

The function that represents the problem is

f(x) = {15 if 1≤x≤5 and 15+1.50(x-5) if x>5

and the graph is in the image, the green line is in y=15. You need to be clear that x takes integer values, but the graph shows a continuous function.

Answer 2

Notice the picture, after the price of quantity (x) of 5, the price begins to slant up, but before 5 is just a straight line, a steady price of 15
$\bf f(x)= \begin{cases} 15,&0\ \textless \ x\le 5\\\\ 1.5x+7.5,&x\ \textgreater \ 5 \end{cases}$