Which value for x makes the open sentence true?

7 + 6 • x = 4^2 + x^2

a) 5
b) 4
c) 3
d) 2

Measures of the angle of r, 31 s (x+4) t (3x+9)

In the triangles, bc =de and ac fe. if the mzc is greater than the mze, then ab isdfelth

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank