A football is kicked into the air. The relationship between x, the number of seconds since the ball was kicked, and f(x), the height of the ball in feet, is represented by the function shown. F(x) = –16x2 + 40x + 4 What value(s) represents the approximate time the football was 28 feet above the ground?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?