Find a formula for tn so that the first four terms are 15, 25, 35, 45.
A. tn = 15n
B. tn = 10n - 5
C. tn = 10n + 5
D. tn = 15n - 5

Question

Find a formula for tn so that the first four terms are 15, 25, 35, 45.
	A.	tn = 15n
	B.	tn = 10n - 5
	C.	tn = 10n + 5
	D.	tn = 15n - 5

anonymous · Answer

The answer would be C.
N is the number of the term you are trying to find, so using the equation in choice C, tn = 10n +5, you can fill in the number of the term you are trying to find in for n.
First term, (1) = 10(1)+5 = 15
10(2)+5 = 25
10(3)+5=35
10(4)+5=45
The fifth term would then be 55.

anonymous · Answer

im so glad you explained it because for some reason i never get it

anonymous · Answer

Find the first four terms of the given sequence tn = (-1)n(n).
	A.	-1, -2, -3, -4
	B.	-1, 2, -3, 4
	C.	1, ½, 2/3, ¾
	D.	1, 2, 3, 4
be my helping buddy im taking a test for summer school