The bookshelf is 4'3" tall. There is 12 inches in a foot twelve times 4 is 48. 48 plus three is fifty-one.
6.3 because you round 6.324 to get 6.3
Remark
They are travelling in opposite directions. Their distances will be added until that distance = 462 miles.
You need only add the r*t values together. You do not need to find the distance.
Givens
d = 462 miles
r1 = 115 mph
r2 = 95 mph
t = the time each was traveling.
Formula
r1 * t + r2*t = d
Substitute and solve
95 * t + 115 * t = 462 Add the like terms on the left.
210 * t = 462 Divide by 210
t = 462 / 210
t = 2.2 hours.
t = 2 1/5 hours
t = 2 hours and 12 minutes
All three answers are the same.
First divide both sides by -8. Remember when you divide by a negative for an inequality, you have to flip the inequality sign.
So the answer is:
y < or equal -6
