1. division
ratio
simplified
one (1) 12 6 18 __ 2 3 2 3 47 1 3 47
hour

2. 1 blue marble out of every 4 marbles.
7 inches to every 1 foot.
61.71 miles per hour.
$6.25
$4.77
$6.25
$4.77
$4.77
$6.25
$1.48
Macadamia Nuts: Unit Rate = $11.25 per pound
Cashews: Unit Rate = $10.35 per pound ($0.90 per pound cheaper)

3. proportional constant NOT constant 45 75 105 135 45 37.5 35 33.75
non-proportional 45 75
105
135 45
37.5 35
33.75
not the same
not proportional
non-proportional

4. 1
Cups of Jelly
Egg Whites
Cups of Jelly
To Egg Whites
proportional
No, because the plumbing company charges more for the first hour, the rate is not the same and therefore is NOT PROPORTIONAL to the number of hours worked.
Yes. The amount of sugar is extra (information not needed). The number of cups of flour will always be 2.5 cups for every 2 eggs, regardless of quantity.

5. ratios
equivalent
equal
3 x n 10
4.5
4.5
12 people: 5 cups of sugar. If recipe changes to accommodate 18 people, a total of 7.5 cups of sugar will be needed.

6. (6)
(10)
($17.94)
($29.90)
$17.94
$29.90
At $11.37 for 3 pounds of apples, the unit rate is $3.79 per pound. At this rate, it would cost $18.95 to purchase 5 pounds of apples.