A cell phone falls off a balcony. It’s height (in feet) is given by the formula h(t)=-16t^2+10.6t+120, where t is measured in seconds. How long will it take the cell phone to hit the ground?

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?