Question

Solve the problem. 21) Exposure to ionizing radiation is known to increase the incidence of cancer. One thousand 21) laboratory rats recorded are exposed to identical doses of ionizing radiation, and the incidence of cancer is during subsequent days. The researchers find that the total number of rats that have ed cancer t months after the initial exposure is modeled by N(t)-1.1912.1 for 0sts 10 months. Find the rate of growth of the number of cancer cases at the 7th month. A) 21.3 cases/month C) 16.3 cases/month B) 25.3 cases/month D) 148.8 cases/month Differentiate. 22) f(x) 22) (3x - 5)(2x3 -x2+ 1) A) f(x)-18x3+39x2-13x+3 C)f(x) = 6x3 + 13x2-39x + 3 B) f(x) 24x3-39x2+10x+3 D) f(x)-24x3-13x2+39x+3 23) 23)y23x2 B)dy--5x8 + 13x7-14x6-4x + 6 A dy 5x8+ 18x7-14x6-3x+6 dx (x7- 2)2 (x7- 2)2 dx DI dy -5x8+18x7-14x6-4x+6 dy -5x8+ 18x7-13x6-4x+6 dx C) (7-2)2 07-2)2 ах Solve the problem. An appliance manufacturer has determined that the cost, in dollars, of producing x espresso maker rs is given by Cx)-3800+1.6x0.5. If the revenue from the sale of x espresso makers is given 70 by R(x) - 52x0.9, find the rate at which the average profit per espresso maker is changing when espresso makers have been made and sold. Round to the nearest cent. B) $0.83/espresso maker D)-$0.73/espresso maker A)-$0.83/espresso maker C) $0.73/espresso maker Differentiate. 25) fox) (2x2+2 A) f(x) 12/2x2+2)- C) f'(x) = (12x + 2x2x2 + 2)2 B) f(x) 12x(2x2 + 2) D) fc)-32x2+22 26)fo)2-34 A) f(x) C) f(x) -40- (2x- 3)3 (2x -3)5 D) f'(x) =- 8(2x-3)5 4(2x - 3)3

Answer 1