Find a quadratic model for the sequence with the indicated terms.
?
?
A. an= 
n2- 
n - 3
B. an= -3n2+ 
n - 
C. an= 
n2+ 
n - 3
D. an= - 
n2+ 
n + 3
E. an= 3n2+ 
n - 
Answer: C
Mathematics
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Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(8, 7)} B. {(8, 6)} C. {(7, 7)} D. no solution; ?
Mathematics
Provide an appropriate response.Ben drove his car 576 kilometers in 7 hours while he was on vacation in Italy. He was trying to estimate how far he could drive in 6 hours the next day so he set up the following proportion: 
Explain why this proportion will not give him the correct answer.
What will be an ideal response?
Mathematics
Simplify the expression.6255/4
A. 3125 B. 1,953,125 C. 78,125 D. 390,625
Mathematics
Divide. Simplify if possible.
÷ 
A. 
B. 27
C. 1
D. 
Mathematics