Solve the equation or inequality. Write inequality solutions in interval notation.x(x - 4) = 21
A. -7, 3
B. -7, -3
C. -3, 7
D. 3, 7
Answer: C
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Determine whether the following is always true or not always true. Given reasons for your answers.(u × v) ? w = u ? (w × v)
What will be an ideal response?
Find the root.- 
A. Not real number B. 25 C. 8.368 D. -5
Find the inverse of the function.f(x) = e7x
A. f-1(x) = -7 ln x
B. f-1(x) = ln
C. f-1(x) = 
ln x
D. f-1(x) = 7 ln x
Solve the problem.In Miguel's home town, the percentage of women who smoke is increasing while the percentage of men who smoke is decreasing. The function 
models the percentage, y, of women in this city who smoke x years after 1990. The function 
models the percentage, y, of men in this city who smoke x years after 1990. Use these models to determine when the percentage of women who smoke will be the same as the percentage of men who smoke. Round to the nearest year. What percentage of women and what percentage of men (to the nearest whole percent) will
smoke at that time? A. 2012; 23% B. 2015; 22% C. 2013; 23% D. 2014; 23%