The answer isn't obvious to a student uncomfortable with percentages and/or algebra,
so a detailed solution may be in order:
We have been given that
The new paycheck equals 100% of PriorPaycheck plus a raise of another another 3% of PriorPaycheck,
We know is the new paycheck...

Let R be the rate of the largest pump so 2R/3 is the rate for each smaller pump.
Assume an arbitrary volume, V, for the tank.
Let T1 be the time to fill the tank with the large pump.
T1 x R =V --> T1 = V/R
The effective rate for all 4 pumps is
...

1.18 is is clearly the ratio twi integers118 and 100 and thus is rational. Rational numbers can't be irrational. The naturural, whole, and integers numbers can all be used directly for counting. 1.18 not so much.
So rational is the only one of the listed sets to which 1.8 belongs.

Kelly,
I have no diagram to go by but the transversal of a line forms 4 angles, two pairs of alternate internal angles. Let's pick a line, c will do, unless <5 is formed where transversal cuts through d. The crossing creates four angles, including <5. ...

Starting with the addition or subtraction of 2 terms, like A + B (where A or B can be complicated expressions including imaginary components), a conjugate is formed by reversing the sign of the second term, A-B. In your case, it means reversing the sign of the...

The sentence before [C] introduces the idea of some doubt, which is consistent with inserting the target sentence, the source of that doubt in [C]. The sentence after [C] would then continue the back and forth dialog by asserting that the problem of sample size introduced in [C] had been addressed...

Since 2 of 3 dimensions are in inches, there are 2 response choices choice with cubic inches versus 1 with cubic centimeters, 2 of three tray dimensions are in inches, and our gallon conversion factor yields cubic inches, it should be easiest if we start by converting the only metric dimension,...