4. Find the equation for the tangent line for the curve y = t '2 +3 at the point where x =1. (use the chain rule) 5. Find the equation of the line that is tangent to the curve f (x) = (3x5 - 7x2 + 5)(x3 +x- 1) at the point (0,-5). (use the product rule) 6. Find 'if = 3x44x 5x23 (multipb) am) y y x 7. Find the points that make the tangent line horizontal for the following function: f (x) = \\Ixz 4x+ 5 (Use the chain rule, and let the derivative = 0, then solve for x)