Write the phrase as a mathematical expression. Use x as the variable.The difference of some number and 7.9
A. 7.9x
B. x + 7.9
C. x - 7.9
D. 7.9
Answer: C
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Decide whether perimeter or area would be used to solve a problem concerning the measure of the quantity.Border fence for a garden
A. Area B. Perimeter
Solve the problem.Find the optimum number of batches (to the nearest whole number) of an item that should be produced annually (in order to minimize cost) if 190,000 units are to be made, it costs $3 to store a unit for one year, and it costs $600 to set up the factory to produce each batch. Assume that units of this item will be sold off throughout the year, so the cost equation will use the average cost.
A. 18 batches B. 24 batches C. 16 batches D. 22 batches
Find the missing integer or fraction.
= 
A. 20 B. 100 C. 50 D. 2
Translate the given formula to an English phrase using the word "varies".I = PRT, where I is the simple interest on a principal of P dollars invested for T years at an interest rate of R per year
What will be an ideal response?