Ratio & Rates
If a 20 oz box of cereal costs 8.99, what's the unit price?
(unit price is the price per oz, round to the nearest cent)
.40 cents
How would you write "5 to 9, as 20 to 36" ?
5/9 = 20/36
A murder >:}
10X + 20Y = 35
x= 1.5
Y=1
2x +5y = 10
(y= mx + b)
y= -2/5 x + 2
If it's 45$ for 2 hours of tutoring, how much is it for 5 hours?
It's 112.50$
Is this Proportional? Remember, both sides should equal each other.
4/9 = 12/27
Yes!
How many heads are on Mt.Rushmore?
35Y -15X = 100
Y= 5
-12x + 4y = 36
y= 3x + 9
If Sarah drinks 1 cups of water in 5 minutes, how long will it take for her to drink 7 cups?
35 minutes
Is this proportional?
15/75 = 125/800
No
What's a movie/production that has characters singing?
70X + 7Y = 294
X= 5
Y= -8
15x - 5y= 2
y= 3x - 2/15
If Car A travels 10 miles in 5 minutes, and Car B travels 20 miles in 8 minutes, what's the difference in miles?
.20 minutes aka 20 seconds
What's 25 divided by 1/7?
125
What has four legs in the morning, two in the afternoon and three at night?
Humans!
(crawling, walking, walk + cane)
8X + 16Y = 216
X + Y = 20
X = 13
Y= 7
What's the slope? (2,1) (4,7)
Slope is 3
If Tomas Train takes 30 minutes to go 4.5 miles, and it takes Henry 25 minutes to go 5 miles, how long would it take for both of them to go 15 miles?
Henry takes 75 minutes
Tomas takes 100 minutes
5/2 or 2.5
51X + 7Y = 121
X=1
Y= 10
What's the slope? (2,5)(6,8)
Slope is 3/4