Use a Riemann Sum with five subintervals of equal length (n = 5) to approximate the area between the graph of f(x) = 9 – 2x and the x-axis on the interval [0, 4]. Choose the representative points to be left endpoints.

Given this information, which expression must represent the value of b?

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0