Answer:
3
Step-by-step explanation:
A. No, because -38 isn't a fraction.
2, No because 400 is a real number.
3. Yes because fractions, decimals, and percents are rational numbers.
hope that helped
Answer: x = 5/2
Step-by-step explanation:

Then, now that we have solved for T, we can evaluate and solve for t=20 minutes.
Answer:
C.
Step-by-step explanation:
The next step is to add (1/2 * 8)^2 = 4^2 = 16 to the 8x and subtract 16 from the + 6:
- to give (x^2 + 8x + 16) + 6 - 16 as the next step in the process.
The extreme minimum is +6 - 16 = -10.