teachers at price middle school are planning a birthday party for the principal. planners estimated that 42 slices of cake would be needed. in fact, only 30 slices of cake were eaten. what was the percent error in the estimate of how much cake was eaten?

a student solved the problem and showed his work below. what was his error?

|42-30|
(100) = 6%
42
1 the planners did not use the absolute error in the ratio.
2 the planners compared the absolute error to the approximate value.
3 the planners did not multiply by 100 to get the percent.
4 the planners divided incorrectly and got the wrong answer.

The equation shown below represents function f. f(x)= -2x+5 the graph shown below represents function g. which of the following statements is true? a. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is less than the y-intercept of function g. b. over the interval [2, 4], the average rate of change of f is greater than the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. c. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. d. over the interval [2, 4], the average rate of change of f is less than the average rate of change of g. the y-intercept of function f is the same as the y-intercept of function g.