Question

The function T(n) is defined below. Which of the following are equal to T(8)? Check all that apply.

T(n) = 4n - 5

A. 27
B. 37
C. T(5) + T(3)
D. T(7) + 4

Answer 1

T(8) means that you replace every n with 8

Answer 2

so 4n-5 becomes 4*8-5

Answer 3

I have A. as an answer but, it is a multiple answer question.

Answer 4

that is one of the two correct answers

Answer 5

I know but that's the problem I'm having...I'm only getting one answer

Answer 6

Obviously it can't be 27 and 37 so obviously t's not B.

between C. and D.

C)
T(5) + T(3) would be:
(4*5-5) +(4*3-5)

D)
T(7) + 4
4*7-5+4

Answer 7

it's actually pretty easy to see when you think about what the formula does.

Every time you increase n by 1 step, the resulting number increases by 4. Since n is multiplied by 4 (the number in front of n is a 4).

So, if you use 7 instead of 8, you need to add 4 to make up for the difference.

Answer 8

It was A and D

Answer 9

They are trying to throw you off with the T(5)+T(3) because you may assume T(5)+T(3) = T(8) but that is simply not so, because T(5)+T(3) would result in a different number.

Answer 10

yes, it's A and D