PLEASE HELP ( I am terrible at math !)
1. On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine burns out. The rocket's height, h, in feet above the surface of the lake, is given by the equation,
h = -16t 2 + 64t + 80,
where t is time in seconds. The maximum height of the rocket is (_____) feet.
2.Tommy and Zach are starting out at the same position. Tommy runs north at 3 miles per hour and Zach starts to run east 2 hours later at the rate of 4 miles per hour. How long until Tommy and Zach are 8 miles apart?
3.Diesel Inc. is making frames for a new product being launched at the end of the year. To keep the weight down, the area of the frame should be 18 cm2. The inside of the frame has to be 11 cm by 6 cm. What should the width of the frame be?
4. The temperature of lake water over a period of time is shown in the graph below.
The first temperature is recorded at 9 p.m. At what time is the water at its lowest temperature?
(___) a.m. I say 3 am
Complete the statement below for the temperature recorded at 7 a.m.
After (_____) I say 10 hours have passed, the temperature of the lake water is
(_____)degrees. i say 54 degrees