Suppose that w is finite dimensional and

prove that t is injective if and only if there exists
such that st is the identity map on v.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

what level of math? also i don't need to be paid if i can you.

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation:

what is the rest of the question? ?