If C(x) = 2 +2 +100+ 10. The approximated cost of the 11th unit is. (Write a number only) Answer: 420 Suppose that f(x) is a function such that f'(-2) = -5. and f(-2) = -7. The equation of the tangent line to the curve y=f(x) at a = -2 is Select one: O ay= 5x +3 O b.y= 22 +7 O c.y= -52 - 3 d.y= -52 - 17 O e.y = 52 - 5 Clear my choice If y=2e2u+1, then f'(x) = Select one: O a. 8e22+1 O b. ez-1 O c. 2e22 d. 4e2r+1