Afootball player starts on the 20 yard line and gains 9 yards. on the next play, he loses 4 yards. the referee says there’s a penalty and takes away the 4-yard loss of yardage. which expression represents the total number of yards gained? a) 20 + 9 – 4 – (−4) b)20 + 9 – 4 + (−4) c) 20 + 9 – 4 – 4 d)20 + 9 + 4 – (−4)

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

the answer is 13 cm