Subtract.(16a4 - 7a2) - (10a4 + 5a2)
A. 26a4 - 2a2
B. 6a4 - 2a2
C. 6a4 - 12a2
D. -6a6
Answer: C
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Part of $3,800 is invested at 12%, another part at 13%, and the remainder at 14%. The total yearly income from the three investments is $506. The sum of the amounts invested at 12% and 13% equals the amount invested at 14%. Determine how much is invested at each rate.
A. $1,100 at 12%, $800 at 13%, $1,900 at 14% B. $700 at 12%, $1,200 at 13%, $1,900 at 14% C. $700 at 12%, $1,900 at 13%, $1,200 at 14% D. $600 at 12%, $1,300 at 13%, $1,900 at 14% E. $800 at 12%, $1,300 at 13%, $1,700 at 14%
Use algebraic and/or graphical methods to solve the inequality.
< 4
A. x < 
or x > 4
B. No solution
C. -4 < x < 
D. x < -4 or x > 
Determine whether the sequence is arithmetic. If so, find the common difference.
4.8, 5.4, 6, 6.6, 7.2, ... a. Arithmetic sequence, d =–0.6 b. Arithmetic sequence, d = 1.2 c. Arithmetic sequence, d = 0.6 d. Not an arithmetic sequence
Evaluate the sum of the arithmetic series with the given values for a1, an, and n.a1 = 19, an = -1671 , and n = 66
A. -54,554 B. -54,491 C. -109,032 D. -54,516