Multiply or divide and write scientific notation for the result.(5.45 × 10-2)(7.23 × 10-6)
A. 3.9 × 1012
B. 3.94 × 1012
C. 3.9 × 101
D. 3.94 × 10-7
Answer: D
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Find the vertex for the parabola whose equation is given.y = x2 + 9x
A. (0, -9)
B. (- 
, - 
)
C. (0, 0)
D. (-9, -81)
The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells binoculars. Use the information in the figure to answer the question.
How many binoculars must be produced and sold for the company to break even?
A. 1500 binoculars B. 2250 binoculars C. 750 binoculars D. 2700 binoculars
Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 
x - 
x = 3
A. {
x is a real number}
B. ?
C. {-24}
D. {24}
Determine the place value of the digit 3 in the whole number.2530
A. Ones B. Thousands C. Hundreds D. Tens