Simplify the expression.3x - 5x
A. -2x2
B. 8x
C. 2x
D. -2x
Answer: D
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Initially a city has a population of 104 thousand. Over the first 10 years the population grows exponentially at a rate of 11% per year. Over the next 10 years the population grows linearly at a rate of 33 thousand individuals per year.
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A: Find a formula that gives the population N, in thousands, over the first 10 years.
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B: Find a formula that describes the population from year 10 to year 20. Be careful: Year 10 corresponds to 
, not to 
.
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C: Find a formula for a piecewise-defined function that describes the population over the 20-year period.
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D: Make a graph of the population over the 20-year period.
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What will be an ideal response?
Solve the problem.A particle is observed moving at 3.88 × 10-6 meters per second. Find the distance the particle would travel in 6.79 × 10-7 seconds.
A. 2.63 × 10-11 meters B. 0.26 × 10-12 meters C. 2.63 × 10-13 meters D. 2.63 × 10-12 meters
Find the slope of the line through the given points.(8, -2), (-8, 6)
A. 0
B. - 
C. - 
D. - 
Solve.The sum of three consecutive even integers is 168. Find the integers.
A. 56, 58, 60 B. 49, 50, 51 C. 58, 60, 62 D. 54, 56, 58