Good afternoon guys and god bless!! does anyone know the answer to this?

—the graph shows how fast a strand of human hair grows. how many inches would the hair have grown in 5 months

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65