Ratios
Probability and Expressions
NO CALC ALL
NO CALC ALL
Circles
Algebra
Percents
Random
100
What is the formula to calculate a k-value (constant of proportionality)?
y divided by x
100
Imagine you have a spinner with equal sections numbered 1 through 8. What is the probability you will land on a number greater than 5?
3/8
100
What is the line across a circle going through the center called
What is the diameter
100
Show -2 < x on a number line.
open circle with arrow going right from -2
100
What is the missing number?
52% of 250 = square
130
100
When is a graph proportional?
MUST HAVE TWO ANSWERS!
When it is a straight line.
If it passes the origin (0,0).
200
What is the unit rate per pound?
5 pounds of apples for $8.
$1.60/pound
200
You roll a single die numbered from 1 to 6. What is the probability of rolling an odd number, expressed as a fraction?
1/2
200
What is the line from the center of a circle to a point on the circle called?
radius
200
Consider the expression 5 + x = n
Explain what must be true about x if n is a negative number.
X must be less than -5 because when it is -5 n will be 0 so it must be a smaller negative value.
200
What is 20% written as a decimal?
.2
200
What is the C.O.P. of this graph?
k=2
300
A train traveled 1/5 of the distance between two cities in 3/4 hour. At this rate, how many hours will it take the train to travel the entire distance between these two cities?
3.75 hours
300
A letter is chosen randomly from the word TELEVISION.
What is the probability that it is a vowel?
5/10 or 1/2
300
What is the area of a circle with a radius of 4?
50.24
300
Simplify the expression:
1/4 (8 - 6x + 12)
- 3/2x + 5
300
I buy a pair of shoes for $50. If I have to pay an 8% sales tax, how much tax does she pay?
$4
300
Is the following table proportional?
NO! it does not go back to (0,0).
There is no pattern for k=y/x.
400
NO CALC: The ratio of pencils to notebooks is 5 to 3. There are 48 pencils and notebooks in total. Find the number of pencils.
30 pencils
400
Ashley just moved from Miami to Chicago and needs to buy a complete set of winter gear. The store has 7 kinds of parkas and 2 kinds of snow boots. If Ashley buys one of each item, how many different sets of winter gear can she buy?
14
400
What is the circumference of a circle with a diameter of 8?
25.12
400
Jessica rented 1 video game and 3 movies for a total of $11.50. The video game cost $4.75 to rent.
The movies cost the same amount each to rent.
What amount, in dollars, did Jessica pay to rent each movie?
$2.25 each
400
What is 22% of 88, rounded to the nearest whole number?
19
400
NO CALC: Simplify the following fraction:
(2/5)/3
2/15
500
There is a proportional relationship between the number of oranges Arianna squeezes, x, and the amount of juice (in ounces) she makes, y.
After squeezing 3 oranges, Arianna has 6 ounces of juice. Write the equation for the relationship between x and y.
y = 2x
500
Factor 28 x + 32
4(7x+8)
500
Find the radius of a circle with a circumference of 47.1 feet.
7.5 feet
500
Solve the inequality:
6 - 2x > 10
x < -2
500
NO CALC: I buy a new shirt that originally cost $40 dollars. It is on sale for 20% off. How much do I pay now for the shirt after the discount?
$32
500
Find x:
x=70
600
NO CALC: Anne and Bob have saved up money in a ratio of 3:8. Bob saved up $400 more than Anne. How much money did Anne save?
$240
600
A jar contains 5 blue marbles, 8 red marbles, 4 white marbles, and 3 purple marbles. Suppose you pick a marble at random without looking. Find the probability of choosing a purple marble.
3/20
600
Find the circumference of a circle with an area of 200.96 square inches.
50.24 inches
600
Solve the equation:
4 - (-2x - 5) = 29
x = 10
600
A pair of shoes originally cost $80, but there’s a 10% discount on them. If the sales tax rate is 7% on the discounted price, how much will you pay in total, including tax, after the discount?
$77.04
600
NO CALC: Solve for a:
a = 8