It's a, because an exponent means it's multiplied by itself that many times. so 3 times 3 is 9 then times 3 again is 27. but negative exponents are always fractions and since the normal number is positive it's D (sorry at first I didn't see d and c)
Answer: (2,-1)
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
the other options are constants, option A is the only option that would just be represented by a whole number
B=t-am is the correct answer:)