Question 178100
1. If tn=2n-3, for what value of 'n'is tn=5?
Is it -1,1,4 OR 7??????? I think the answer is 4 or 7????????
Correct
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2. Which sequence represents an exponential function????
a) {1,6,11,16,21,...}
b) {16,8,4,2,1,...}
c) {2,8,18,32,50,...}
d) {1,8,27,64,125,...} I think it is (b)
d = 1^3,3^3,8^3,5^3
Correct
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3. Which function represents a geometric sequence?
a) {3*4,3*4^2, 3*4^3,3*4^4,...}
b) {3+4,3+4+4,3+4+4+4,...}
c) {3*4,3*5,3*6,3*7,...}
d) {3+4,3+4^2,3+4^3,...} 
a has a common ratio of 3
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Cheers,
Stan H.