The data that show the test scores on the first two tests of an eighth-grade science class. Test 1: 75, 85, 76, 91, 100, 79, 83, 88, 86, 90, 93, 65, 77, 84, 86, 93, 73, 85, 89, 90
Test 2: 95, 87, 90, 70, 98, 84, 89, 77, 70, 90, 95, 84, 93, 81, 84, 98, 96, 74, 90, 73

What are the median test grades for Test 1 and Test 2?

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.