Rewrite the number as a product of a whole number and a power of 10.2,400,000
A. 245 ? 10
B. 24 ? 104
C. 24 ? 105
D. 24 ? 106
Answer: C
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Write an equation for the linear function and use it to answer the given question. Normaltown High School's pool record for the 100-yard freestyle was 46.7 in 1990. Assume that the record falls at a constant rate of 0.07 second per year. What does the model predict for the record in 2017?
A. R = 46.7 + 0.07t; 48.59 seconds B. R = 46.7 - 0.07t; 44.81 seconds C. R = 46.7t - 0.07; 1260.83 seconds D. R = 46.7t + 0.07; 1260.97 seconds
Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.x-8 ? x4
A. - 
B. x4
C. -x4
D. 
Simplify the expression. Assume that variables can represent any real number.
A. 2xy2
B. 2xy2
C. 3xy2
D. 2x3y6
Multiply.
A. 488,230 B. 498,130 C. 488,130 D. 487,130