please help me with this. Page it's due in 10 min

. The cost function for producing x units C(x) = - 2 x2 + 2x + 10 in dollars when x $ 25. a) What is the marginal cost? The revenue function for x items is the parabola R(x) = - 1x 10 x2 + 5x in dollars when x 5 25. b) What is the profit function ? c) Find the number of units produced and sold that produce the maximum profit. d) What is the maximum profit in dollars? 7. Find the equation of the tangent line of f(x) = 3x2 - 2x + 4 at x = 1. 8. What is the ending balance of an account where $8000 was invested at 6% compounded monthly for 10 years? 4 of 7