Short answer A
This one is exactly the same (with number changes) as the last one. You cannot use t which is in time, to mix with pure numbers which in this case is grams. That means that both C and D are incorrect.
Now as with the last one, are you going to raise e to a minus number or a plus number? Remember that if e is raised to a plus number, the sample in this case will increase. You are watching a radioactive decay. The number has to be smaller. So B is eliminated. There is only one answer left and that's A. It should be correct.
A <<<<< answer
The coefficient of the second term is 18.
What you do is you FOIL the terms:
One quarter. Because four quarters makes a whole.
Let's solve it step-by-step:
25 + 20 = 45
45 + 45 = 90
90 + 34 = 124
124 + 21 = 145
Therefore:
25 + 20 + 45 + 34 + 21 = 125
Hope it helped,
BioTeacher101
So to get this, we multiply 4 1/4 by 1 1/2 because he is 1 1/2 times taller than her. 4 1/4 x 1 1/2 = 6 3/8 feet tall.
Hope this helps!
