F(x)=2(x)^2+5 square root (x+2) f(0)

Can someone me with my hwplz(only the circled ones)

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.