Solve the system of equations by substitution. y=-4x - 16

y=-8x - 24

A) (-2,-8)
C) (-8, 2)
B) (2,-8)
D) (-2,5)

Can any one me with the answers to these questions asap?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes