Answer: c) The base is 2.
Reason: It is an exponential function because the variable (2) depends on the x.
I would need more information from the question to give an answer for each trapezoid.
Answer: $0.28
Step-by-step explanation: Pic is attached. Hope this helps. Sorry for the bad handwriting, I'm writing with a mouse.
Answer:

Step-by-step explanation:
All you do is multiply straight across [both denominator and numerator] to arrive at your answer. Then, multiplying two <em>x</em>'s together gives you
. So, with all that being said, you have your answer.
I am joyous to assist you anytime.