A plane descends from an altitude of 5,000 feet at a rate of 300 feet per minute for the first five minutes. after this, the plane descends at a rate of 200 feet per minute until it touches down on the ground. what is the altitude of the plane when the plane has been in descent for 7 minutes.

f is the midpoint of

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

#12 the answer is the third option