The Blood Alcohol Concentration (BAC) of a person who has been drinking is given by the expression number of oz × % alcohol × 0.075 ÷ body weight in lb – hr of drinking × 0.015
Find the BAC to the nearest thousandth for a 160-lb man who, in 3 hr, has drunk four 12-
oz beers (48 oz), each having a 3.2% alcohol content.

Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?