A manufacturing company has designed a new test of mechanical aptitude for its machinists. Scores on this test can be approximated with a Normal distribution with µ=400 and s = 60. What score would a machinist need in order to be in the top 10% of all machinists who would take this test? (round to the tenths) *

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,