Can anyone please help me with this Operations on Functions Algebra 2 Math Question? Soon as possible!

If f(x) = x^2, and g(x) = 5x, find g[f(3)]

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Find the actual dimensions of the box. the side length are in meters and integers. the surface area of the box is 104 m2 and volume of the box is 60 m3.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality