Step-by-step explanation:
Substitute 3 and 4 into the expression:
3(3)²+24(4)
Work it out:
3(3)²+24(4)=123
You'll need to know how 1 kg relates to the more familiar Kg:
1 Kg = approx. 2.2 lb.
Convert 8 Kg into lb. and then ask yourself whether the resulting weight, in lb., is reasonable for a male high school student.
A hectogon, I believe.......
Answer: speed = 22 meters/minute
distance = 500 meters
by using the formula, speed = distance/time,
therefore, time = distance/speed
t = 500/22
t = 22.72 minutes