An astronaut on Mars is working to install a radio antenna on top of a 300-meter-high cliff. Suppose that the astronaut drops her wrench off the cliff. The height of the wrench above the ground, in meters, can be modeled by the function h(t) = 300 −1.86t^2 , where t is measured in seconds. How long does it take to hit the ground? HELP M E PLZ

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck