Teacher/User Name: DEMO | Name:__________________________ |
Practice Problems | Period: ________ Date: ____________ |
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1)  | The perimeter of a rectangle is 21 cm. This means the area of the rectangle can be given with the formula Find the maximum area of the box. |
2)  | An object thrown straight up has a height given by: s = -16t2 + vot + so. Where s = the height at time t seconds, vo is the velocity, and so is the initial height of the object. Suppose an object is thrown upwards from the top of a tower 40 feet high with an initial velocity of 70 ft/sec. Find the maximum height of the object. |
3)  | An open box is to be made from a square piece of cardboard 11 cm on each side by cutting equal squares with sides of length x from the corners and turning up the sides. The volume of the box is given by the function: |
4)  | An object thrown straight up has a height given by: s = -16t2 + vot + so. Where s = the height at time t seconds, vo is the velocity, and so is the initial height of the object. Suppose an object is thrown upwards from the top of a tower 220 feet high with an initial velocity of 100 ft/sec. Find the number of seconds until the object hits it's maximum height. |