For what value of a does
( 1/9) ^a+1 •27^2-a ?

O-4
O-2
O 2
O 6

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

What is the value of f(x) = 2.2 for f(-2)?