Answer:
8z + 20
Step-by-step explanation:
f(z) = 4(2z+5)
= 4*2z + 5*4
= 8z + 20
D (2,-8) is not a point on the graph
Remember you can do anything to an equation as long as you do it to both sides
(y/4)-49=-9
isolate the variable
add 49 to both sides
y/4=40
multiply both sides by 4 to clear fraction
y=160
