MULTIPLE CHOICE. NEED SOLUTION.

CHOICES ARE GIVEN BELOW.

1. What is the equation of the line tangent to the function y = x + 7x + 5x - 2 at x = 0?

Choices:

• y = 5x - 2
• There can be no tangent line to the function
• y = 2x + 5
• None of the choices
• y = 2x - 5

2. A right circular cone has a constant height of 10 m. Find the rate of change of its volume with respect to its radius when the radius is 4m in m / m.

Choices:

• None of the choices
• 60
• 36
• 120
• 20