Find the first term a1 and the common difference d of the arithmetic sequence.2.78, 4.21, 5.64, 7.07, . . .
A. a1 = 1.43, d = 4.29
B. a1 = 2.78, d = 1.07
C. a1 = 1.43, d = 2.78
D. a1 = 2.78, d = 1.43
Answer: D
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Provide an appropriate response.Explain the error in the following: log68 - log6N = log6(8 - N).
What will be an ideal response?
Write the first four terms of the sequence.an = 
n
A. a1 = 1, a2 = 
, a3 = 
, a4 = 
B. a1 = 
, a2 = 
, a3 = 
, a4 = 
C. a1 = 
, a2 = 
, a3 = 
, a4 = 
D. a1 = 1, a2 = 
, a3 = 
, a4 = 
Perform the indicated operation. Write the sum as a fraction, whole number, or mixed number in lowest terms.3
+ 2
+ 
A. 128
B. 10
C. 10
D. 8
Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 33 marbles in it. At least how many green marbles does it have?
A. At least 17 green marbles B. At least 11 green marbles C. At least 12 green marbles D. At least 22 green marbles