Which of the following is a solution to the equation 0=x^2-8x-13

a. 4+√29
b. 4+√3
c. 8+√29
d. 8+√3

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes