Which is a simplified form of the expression -9(y + 1) + 5y?
a. 4y + 9
b. 6y + 1
c. -14y + 9
d. -4y – 9

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo