Divide.
A. 7x8 - 2x4 + 7x2
B. 7x6 + 2x2 - 7
C. 7x6 - 2x2 + 7
D. 14x6 - 4x2 + 14
Answer: C
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Solve the problem.A bakery sells four main items: rolls, bread, cake, and pie. The amount of each of five ingredients (in cups, except for eggs) required to make a dozen rolls, a loaf of bread, a cake, or a pie is given by matrix A. Eggs Flour Sugar Shortening Milk src="https://sciemce.com/media/4/ppg__tttt0508191537__f1q103g4.jpg" style="vertical-align: -40.0px;" /> = BUse matrix multiplication to find a matrix giving the comparative cost per item for the two purchase options. Give each cost to the nearest cent.
= AThe cost (in cents) per unit of ingredient when purchased in large lots or small lots is given in matrix B. Cost Large Lot Small Lot 
A. 
B. 
C. These matrices cannot be multiplied.
D. 
Solve the problem. Round to the nearest cent or tenth of a percent.An item has a 27.9% markup based on selling price. What is the equivalent markup percent based on the cost?
A. 21.8% B. 78.2% C. 61.3% D. 38.7%
Subtract.
- 
A. - 
y + 
B. - 
y + 
C. 
y + 
D. 
y + 
Simplify. Assume that all variables and radicands represent nonnegative values.
A. m3n2
B. m3n2
C. m4n3
D. m3n4