Simplify.[22 + (-4)] ÷ (-3)
A. -6
B. 
C. 6
D. 15
Answer: A
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Solve the problem.The line graph shows the cost of inflation. What cost $5000 in 1980 would cost the amount shown by the graph in subsequent years. 
Below are two mathematical models for the data shown in the graph. In each formula, C represents the cost x years after 1985 of what cost $5000 in 1980. Model 1: C = 798x + 17,521 Model 2: C = -x2 + 820x + 18,017(i) Use the graph to estimate the cost in 2000, to the nearest thousand dollars, of what cost $5000 in 1980.(ii) Use model 1 to determine the cost in 2000. How well does this describe your estimate from part (i)?(iii) Use model 2 to determine the cost in 2000. How well does this describe your estimate from part (i)?
A. (i) about $28,000; (ii) about $29,491, reasonably well; (iii) about $28,452, reasonably well B. (i) about $29,000; (ii) about $29,491, reasonably well; (iii) about $30,092, reasonably well C. (i) about $30,000; (ii) about $30,289, reasonably well; (iii) about $30,912, reasonably well D. (i) about $27,000; (ii) about $28,693, reasonably well; (iii) about $29,272, reasonably well
Solve the equation.9x + 1.3 = -80.6
A. -9.1 B. -8 C. -8.1 D. -10.2
Find the product of the two binomials.(x - 5)(-2x + 3)
A. -2x2 + 11x - 15 B. -2x2 + 13x + 13 C. -2x2 - 15x + 13 D. -2x2 + 13x - 15
Provide an appropriate response.If y = 3x4 - 6x2, use the second-derivative test to find all values of x for which (a) relative maxima occur (b) relative minima occur.
Fill in the blank(s) with the appropriate word(s).