Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.4, 12, 20, 28, 36, . . .
A. an = 4n - 1; a20 = 79
B. an = 4n - 8; a20 = 72
C. an = 8n - 1; a20 = 159
D. an = 8n - 4; a20 = 156
Answer: D
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Graph the linear function and give the domain and range.h(x) = 4
A. D = {4}, R = (-?, ?)
B. D = (-?, ?), R = {4}
C. D = {4}, R = (-?, ?)
D. D = (-?, ?), R = {4}
Find the values of x and y.
?
?
__________
?
__________
What will be an ideal response?
Find the sum, if it exists.32 + 
+ 
+ 
+ . . .
A. 4
B. 36
C. 
D. Does not exist
Solve.During a five-year period, a company doubles its profits each year. If the profits at the end of the fifth year are $224,000, then what are the profits for each of the first four years?
A. $14,000, $28,000, $42,000, $56,000 B. $15,000, $30,000, $60,000, $118,000 C. $14,000, $28,000, $56,000, $112,000 D. $14,000, $28,000, $56,000, $140,000