Write the expression with positive exponents. Then simplify if possible.4-1 + 7-1

A. - 
B.
C. 2
D.


Answer: D

Mathematics

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Solve by using the square root property.4x2 - 60 = 0

A. 30
B. 16
C. -15, 15
D. -

Mathematics

Perform the indicated operation.3 + (-4)

A. -1 B. 1 C. 7 D. -7

Mathematics

Select the function that matches the given graph.

A. y = (x - 2)2 B. y = -x2 + 2 C. y = -(x + 2)2 D. y = x2 + 2

Mathematics

Solve the problem.The manager of big box store has found that if the price of a pillow is  then x pillows will be sold. The expression for the total revenue from the sale of x pillows is R(x) = 95x - . Find the number of pillows that will produce maximum revenue.

A. 360 pillows B. 420 pillows C. 760 pillows D. 380 pillows

Mathematics