Find an equation of variation for the given situation.y varies inversely as x, and y = 21when x = 3
A. y = 63x
B. y = 
C. y = 
D. y = 
Answer: B
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Provide an appropriate response.A train holds 200 passengers and departs daily at 8:00 A.M.(a)Write the daily departure time as a function of the number of people on the train.(b)How does the departure time change as the number of people on the train increases?(c)What kind of function is this?
What will be an ideal response?
Translate to an equation, then solve.Thirty decreased by the product of three and y is the same as twice the difference of y and thirty-five.
A. 30 - 3y = 2y - 35, y = 13 B. 30 - 3y = 2(y - 35), y = 100 C. 30 - 3y = 2(y - 35), y = 13 D. 30 - 3y = 2(y - 35), y = 20
Divide. Write with positive exponents.
A. 5x6 - 10x4 + x2 B. 5x7 - 10x4 + x C. 5x6 - 10x3 + x D. -5
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.95
A. 9.547 B. 0.01 C. 954.72 D. 95.472