Mary has taken 7 quizzes in her social studies course. she received the following grades on the quizzes: 94, 74, 78, 90, 85, 82, 78 which statement about mary's grades is true? a. the mean and median are equal. b. the mean and mode are equal. c. the median is 82 and the mode is 78. d. the mean is 83 and the median is 90.

If 1/2 is half of 1, what is 1/2 of 2,3, and 4?

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6