Hello,
n=1,2,3,.... and not 0
Answer B a(n)=-2*n
B•X. All u need to is b times x
The domain is going to be ur x values....the number of minutes
therefore, ur domain is : I know it is either A or C.....I am thinking C because it does not have to be a whole minute...it can be 1.5 minutes...so that would eliminate A. final answer is gonna be C