Given the profit function P(x) = 1.3x -0.01x2 - 30, find the value of x at the function's optimum and its maximum profit.

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)