Equations
-13 = y - 4
-9 = y
6 bowls of cereal to 20 pancakes
6/20 = 3/10
Do these ratios form a proportion?
4/10 , 32/72
NO
On a map with a scale of 0.25 inches=30 miles, the distance between 2 cities is 8.3 inches. What is the actual distance between the cities?
996 miles
Find 15% of 30.
4.5
76 = 10m - 4
8 = m
14 angelfish to 18 seahorses
14/18 = 7/9
Do these ratios form a proportion?
40/25 , 32/20
YES
Carl is remodeling his kitchen. On his plans, the island is 4 inches long. If the actual island will be 9.2 feet long, what was the scale Carl used to create the plans?
115.6 is what percent of 340?
34%
1 - 7x - 7 = 15
x = -3
After running 5 miles Kevin's total time was 42 minutes. Find his time for 1 mile.
8.4 minutes/mile
solve the proportion:
15/45 = 9/c
c = 27
Morgan and Natalie's heights can be compared using a scale of 1.5 in : 2.5 in. If Morgan is 36 inches tall, how tall is Natalie (in feet).
5 feet
28 is 40% of what number?
70
k - 1 < 7
k < 8
Who has the better deal?
Option A: 6 granola bars for $6.48
Option B: 5 granola bars for $5.50
Option A
Solve the proportion:
16/20 = v/15
v = 2
A palm tree casts a 19 ft shadow. A beach umbrella in the sand next to the tree casts a 6.5 ft shadow. If the umbrella is 4 ft tall, what is the height of the palm tree?
11.7 feet
What is 65% of 175?
113.75
5 - 9r > -13
r > 2
Who has the better deal?
Option A: 16 oz. of jelly for $3.30
Option B: 48 oz. of jelly for $8.64
Option B
Erin is making lemonade. She needs 1.75 cups of white sugar to make 8 cups of lemonade. She has a 32 cup pitcher to fill. How many cups of sugar will she need?
7 cups
A telephone pole is 45 ft tall and casts a 20 ft shadow. A street lamp next to the pole casts a 12 ft shadow, what is the height of the street lamp?
27 feet
31.85 is 24.5% of what number?
130