Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. x15
B. 
C. x14
D. 
Answer: B
Mathematics
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Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 22t + 117. For what values of t will there be a profit (that is, P > 0)?
A. There will be a profit when the number of units sold is between, but not including, 9 and 13. B. There will be a profit when 9 or 13 units are sold. C. There will be a profit when 22 units are sold. D. There will be a profit when fewer than 9 or more than 13 units are sold.
Mathematics
Perform the indicated operations. Write the answer in simplest form.
÷ 
A. 
B. 2
C. 
D. 
Mathematics
Add.-21 + (-20)
A. -1 B. 41 C. 1 D. -41
Mathematics
Solve the equation graphically by finding x-intercepts.
= 12x + 4
A. x = 
B. x = - 
C. x = 
D. x = - 
Mathematics