Simplify the following expressions. Simplified expressions must be in lowest terms, and exponents must be positive numbers.
A. 
B. 
C. 
D. none of these
Answer: B
Mathematics
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Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.x(t + 1) - 4t
= 9, 2y + 4y3/2 = t3 + t, t = 0
A. 6
B. 3
C. 
D. 
Mathematics
Solve the problem. Round to the nearest cent.Joan wants to have $250,000 when she retires in 25 years. How much should she invest annually in her annuity to do this if the interest is 7% compounded annually?
A. $8998.99 B. $3952.63 C. $7010.57 D. $3000.71
Mathematics
Use the graph to determine whether the function is one-to-one.
A. No B. Yes
Mathematics
Find the probability.What is the probability that a card drawn from a deck of 52 cards is not a 9?
A. 
B. 
C. 
D. 
Mathematics