Which equation is a point-slope form of the equation of this line? OA. -2x + y + 5 = 0
OB.'y=2x-5
OC. "(y + 1) = 4(1)(2)(x - 2)
OD. "(-1) = 2(x+ 2)

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?