Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 
A. Yes
B. No
Answer: A
Mathematics
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Find the exact area of the surface obtained by rotating the given curve about the x-axis.
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Mathematics
Solve. Try factoring first. If factoring is not possible or is difficult, use the quadratic formula.x2 - x = 6
A. 1, 6 B. -2, -3 C. 2, 3 D. -2, 3
Mathematics
Solve the problem using matrices.Jenny receives $1270 per year from three different investments totaling $20,000. One of the investments pays 
the second one pays 8%, and the third one pays 5%. If the money invested at 8% is $1500 less than the amount invested at 5%, how much money has Jenny invested in the investment that pays 6%?
A. $4500 B. $1500 C. $10,000 D. $8500
Mathematics
Solve the problem.A 6-sided die is rolled. What is the probability of rolling a number less than 2?
A. 
B. 
C. 
D. 
Mathematics