Simplify the given expression.3mn - 3mn
A. 0
B. mn
C. 
D. 6mn
Answer: A
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Rewrite the expression with positive exponents and simplify.
?
A. ?
B. 
C. 
D. 
E. 
The function f(x) changes value when x changes from x0 to x0 + dx. Find the approximation error 
. Round your answer, if appropriate.f(x) = x2 - x, x0 = 9, dx = 0.03
A. 0.0009 B. 0.0018 C. 0.2709 D. 0.27
Solve the problem.A contractor is considering a sale that promises a profit of $38,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $18,000 with a probability of .3. What is the expected profit?
A. $20,000 B. $26,600 C. $21,200 D. $39,200
Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the sequence with the given first term, a1, and common ratio, r.Find a11 when a1 = -5, r = -3.
A. -295,245 B. -35 C. -295,241 D. 885,735