Find the expression for f(x) that makes the following equation true for all values of x. (81^x)/9^5x-8=9^f(x)

Step-by-step explanation:

As it is bad written, i suppose it is

here i hope this helps and please mark me brainliest

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: