a high school princable ask a physcical education teacher and football coach to obtain a sample of 20 students each to compare times in physcical activity each week. The physical education teacher randomly selects 20 students from her classes, and the football coach randomly selects 20 students from football. Do you expect comparison to be fair?

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

Which number produces a rationale number when multiplied by 1/5

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .