Tax & Tip
Unit Rates and Prices
Equations
Ratios
Determining Proportionality
Mystery
100
Tax and Tip are __________ to the cost.
added
100
Calculating unit prices is easier than unit rates because for unit price, it is always ___________ ÷ the amount.
price
cost
$
100
For an equation to be PROPORTIONAL, it must be in the form ...
y = kx
100
There are 6 sneakers and 5 flip flops in a shoe box. Find the ratio of flip flops to sneakers.
5 to 6
100
Is the graph proportional? EXPLAIN.
YES, it is a STRAIGHT LINE and GOES THROUGH THE ORIGIN (0,0)
100
Discount is ________________ from the cost
subtracted
200
Pennsylvania's sales tax is _____% and Delaware sales tax is _____%
6% and 0%
200
A 6 pack of bananas costs $2.40. Find the unit price.
0.40¢
2.40 ÷ 6 = 0.40
200
What is the constant of proportionality in the equation C=2.9n ?
2.9
200
There are 8 cats and 11 dogs in an animal shelter. Find the ratio of dogs to total animals.
11 to 19
200
What is the constant of proportionality in the equation y=44x ?
44
200
All even numbers are divisible by _____.
2
300
Rachel's bill at Olive Garden is $44.50. She would like to tip 20%. Calculate the total bill. Round to the nearest hundredth.
$53.40
0.20 x 44.50 = 8.90
44.50 + 8.90 = 53.40
300
Lyla drove 350 miles in 7 hours. Find the miles per hour for her travel.
50 miles per hour
350 ÷ 7 = 50
300
Ana makes $11 an hour working at Starbucks. Form an equation to find the money earned, M, after any amount of hours worked, h.
M = 11h
300
There are 3 principles, 10 teachers, and 50 students in the auditorium. Find the ratio of students to total people in the auditorium.
50 to 63
300
Is the equation y=22x + 4 proportional? EXPLAIN.
No, it is not in the form y=kx
300
The ratio of horses to total animals in a farm is 6 to 25. Convert this to a percent.
24%
400
Nya buys a jacket for $65 in California. Sales tax rate in California = 7.25%. Find the total cost for the jacket.
$69.71
0.0725 x 65 = 4.71
65 + 4.71 = 69.71
400
Ron swam 2.2 miles in 54 minutes. Calculate his minutes per mile for the swim. Round to the nearest hundredth.
24.55 minutes per mile
54 ÷ 2.2 = 24.545454
That rounds to 24.55
400
Form an equation for the table below.
y =8x
400
Use the numbers 6 and 8 as an example.
Write the three ways that ratios can be written.
6 to 8
6/8
6 : 8
400
Is the table proportional? EXPLAIN.
YES
8 ÷ 2 = 4
20 ÷ 5 = 4
36 ÷ 9 = 4
400
For every piece of furniture Ali sells, she earns 6.5% commission. If her sales last week were $4,825, how much did she make in commission? Round properly.
$313.63
0.065 x 4,825 = 313.63
500
Liam's bill at Outback in Arizona is $60.56. Arizona's sales tax is 5.6%. Liam would like to tip his server 20%. Calculate Liam's total bill.
$76.74
0.056 x 60.56 = 3.39
60.56 + 3.39 = 63.95
0.20 x 63.95 = 12.79
63.95 + 12.79 = 76.74
500
Acme's deal on paper towels is 5 rolls for $10.90. Costco's deal is 20 rolls for $40.10. What is the better buy? Exactly much money do you save with the better buy?
Costco, you save 0.17¢
Acme
10.90 ÷ 5 = 2.18
Costco
40.10 ÷ 20 = 2.01
You save 0.17¢ because 2.18-2.01=0.17
500
Form an equation for the table below.
y = 6x
500
In a classroom, there are 24 desks, 2 carts 24 chairs, and 6 tables. Find the ratio of chairs to total furniture items in the classroom. ANSWER MUST BE FULLY REDUCED.
3 to 7
24 chairs
56 total items (24+2+24+6)
24 to 56 --> 3 to 7
500
Is the table proportional? EXPLAIN.
NO
9 ÷ 3 = 3
15 ÷ 5 = 3
24 ÷ 8 = 3
48 ÷ 12 = 4 MESSES IT UP
500
There are 8 workers and 20 customers in a store. What percent of people in the store are customers? Round to the nearest hundredth.
71%
20 divided by 28