Answer: 62.5 kilometers
Step-by-step explanation:
12.5 and 5 should be multiplied to find out how many kilometers Chau rode within 5 hours. 12.5 * 5 = 62.5.
Answer:
3x(x^2+4)
=3x^2+12x
A
9 > 3 + 2x
6 > 2x
3 > x
or
x < 3
and that means 3 is NOT included (otherwise there must be a smaller or equal sign). hence A is the right answer.