A projectile is fired from ground level such that its height, h, as a function of time, t, is given by h = "-16t^2" + 80t. Written in factored form this equation is equivalent to (1) h = -16t(t+4)
(2)h = -8t(2t-7)
(3)h = -16t(t-5)
(4)h = -8t(t-5)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0