Write the rational expression as an equivalent rational expression with the desired denominator.
= 
A. (x - 1)(2x + 1)
B. (x - 1)(x + 6)
C. x + 3
D. (x + 3)(2x + 1)
Answer: D
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Solve.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
A. $8000 at 5%, $10,000 at 6%, $7000 at 8% B. $5000 at 5%, $10,000 at 6%, $10,000 at 8% C. $10,000 at 5%, $5000 at 6%, $10,000 at 8% D. $10,000 at 5%, $10,000 at 6%, $5000 at 8%
Perform the matrix operation. 
+ 
=
A. 
B. 
C. 
D. 
Find the point(s) on the graph of the function 
where the slope of the tangent line is equal to - 7.
What will be an ideal response?
Solve the problem.Shari enjoyed services at a spa. The total cost of these services was $310. If she decides to leave a 9% tip, how much should the tip be? Round your answer to the nearest cent.
A. $24.80 B. $27.90 C. $279.00 D. $31.00