Aparallelogram has an interior angle measuring 81°. which must also be the measure of an interior angle of the parallelogram?
a) 9°
b) 19°
c) 49°
d) 89°
e) 99°

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13