Solve the inequality. Write the solution set in interval notation.(x + 7)(x - 3) ? 0
A. (-?, -7] ? [3, ?)
B. (-?, -7) ? (3, ?)
C. (-7, 3)
D. [-7, 3]
Answer: D
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Solve the problem.The revenue from the sale of a product is given by R = 1420x - 17x2 - x3. If the sale of 10 units gives a total revenue of $11,500, use synthetic division to find another number of units that will give $11,500 in revenue.
A. 28 units B. 50 units C. 13 units D. 23 units
Decide what number must be added to the binomial to make a perfect square trinomial.x2 + 14x
A. 25 B. 98 C. 7 D. 49
Graph the function.f(x) = ln x
A. 
B. 
C. 
D. 
Solve the problem.The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is W(t) = 
where v represents the wind speed (in meters per second) and t represents the air temperature 
. Compute the wind chill for an air temperature of 15°C and a wind speed of 12 meters per second. (Round the answer to one decimal place.)
Fill in the blank(s) with the appropriate word(s).