consumers in a country are concerned that the cars they drive are creating too much air pollution which response would most likely occur if the county had a free enterprise system

Which of the following ideas would not lead to lower amounts of waste? a) the extension of a product’s lifetime b) the elimination of unnecessary packaging c) flexible construction for simple repair d) built-in obsolescence e) the introduction of new design technology

The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. which statement is true if we are testing the null hypothesis at the 95% confidence level? a. the difference of the two means is significant, so the null hypothesis must be rejected. b. the difference of the two means is significant, so the null hypothesis must be accepted. c. the difference of the two means is not significant, so the null hypothesis must be rejected. d. the difference of the two means is not significant, so the null hypothesis must be accepted.

Hurry plz answer the y-intercept of a parabola is 1, and its vertex is at (1,0). what function does the graph represent? a. f(x) = (x − 1)2 b. f(x) = (x + 1)2 c. f(x) = -1(x − 1)2 d. f(x) = -1(x + 1)2