A rock climber has reached the top of a mountain at 150 feet above the ground and is beginning his decent. He can travel downward at a rate of 30 feet per second. How many feet above the ground will the rock climber be after 3 seconds?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false