Solve the system by the substitution method.
A. 
B. 
C. {(2, -2), (-8, 8)}
D. 
Answer: A
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Find a formula for the nth term of the sequence.3, 4, 5, 6, 7 (integers beginning with 3)
A. an = n - 3 B. an = n + 3 C. an = n + 2 D. an = n + 4
Solve the problem.Abe, Boris, Cal, and David all proposed to Ellie on Friday. Abe proposed at 5:00, Boris proposed at 6:00, Cal proposed at 7:00, and David proposed at 8:00. Ellie accepted the last of the four proposals. Some clues: (1) The times may be A.M. or P.M. (2) Boris proposed before Abe (3) At least one suitor proposed between the proposals of Cal and David. (4) Cal did not propose between Boris and Al. Whose proposal did Ellie accept?
Fill in the blank(s) with the appropriate word(s).
Use the formula for the general term (the nth term) of an arithmetic sequence to find the indicated term of the sequence with the given first term, a1, and common difference, d.Find a11 when a1 = 21, d = -3.
A. -12 B. -30 C. -9 D. 51
Solve the equation.4x + 5 = 0
A. - 
B. - 
C. 
D. 