Why is −318 a rational number? A. It is rational because all negative numbers are rational. B. It is rational because all integers are rational. C. It is rational because it can be expressed as a repeating decimal. D. It is rational because it can be expressed as a terminating decimal.

The correct answer is the option B: It is rational because all integers are rational.

Step-by-step explanation:

To begin with, a rational number is the one that can be expressed as a fraction of two integers and that implicates all integers, both positives and negatives. Moreover, there are some rational numbers that can be expressed as well as a repeating number and others that can be expressed as a terminating number and all that will depend on the last number that the division will cause.  So to sum up, -318 is a rational number because it is an integer and all of them can be divided and expressed as a fraction of two integers.

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.