Ira build a model of the great pyramid in egypt for a school project. the great pyramid has square base with sides of leght 756 ft. the legth of the great pyramid is 481 ft. ira made his model pryramid using a scale of 1 in. : 20 ft.
1. what is the leght of each side of the base of iras pryramid?
2.what is the area of the base of iras pyramid?
3.what is the height of iras pyramid?
4. ira built model using cross sections that were cut parallel to the base. what shape was each cross section?

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42