Rates
Which of the following situations does NOT have a constant rate of change?
a. Jason solves 1 equation every 3 minutes
b. A line with a slope of 3.2
c. Melanie runs 20 miles every day
d. The difference between perfect squares
D
I went out to dinner and the bill was $15.75. I want to leave a 20% tip. What should my tip be?
$3.15
Evaluate
10 + |-4| + 8(2)
30
What is the outlier of this data?
4, 5, 7, 5, 9, 17, 6, 8, 7, 5
Outlier=17
What does it mean when two shapes are congruent?
The are the exact same size and shape.
On vacation, Juan drove 275 miles in 5 hours. How far will Juan travel in total at the same rate for 3 more hours?
440 miles
A suit is $450 and is on sale for 40% off. How much would the suit cost?
$270
What is the value of the expression when x=4, y=6, and z=-3
-2x + 2y - 3z
13
Nine balls are numbered 1-9. What is the probability of picking a ball that has an odd number on it?
55.5%
What property does this show?
(3 x 4) x 5 = 3 x (4 x 5)
a. Commutative Property
b. Distributive Property
c. Associative Property
Mike is building a model of an antique car. The scale is 2cm = 3ft. If the windshield of the car is 6ft wide, how wide should he make the model?
4cm
Attendance at Valley View has increased by 15%. If the current attendance is 359 students, how many students were enrolled before?
312 students
Which algebraic expression has a value of 4 when x=4?
a. 3x-5
b. 5x+1
c. 6x-20
d. x+3
c. 6x-20
In a bag of jelly beans there are 5 red, 9 green, 5 blue and 7 orange. What is the probability you pick a red one? Write your final answer as a percent.
20% chance of picking red
What makes a relationship proportional?
- Goes through (0,0) or the origin
- Straight Line
- Grows by a constant rate
If beef costs $7.50 for 4 pounds, how much would it cost for 6 pounds?
$11.25
A computer originally cost $1,258. On Sunday, it will be on sale for $850. What is the percent decrease rounded to the nearest whole percent?
32%
Evaluate:
(4+5)2 +3 x 4
93
What is the range of this data?
5 , 8 , 12 , 16 , 3 , 21 , 17 , 8 , 9
Range = 18
What is the base and height of a rectangle that has an area of 40 and a perimeter of 28?
4 by 10 rectangle
One and a half dozen of oranges cost $15. How much does one orange cost? (Round to the nearest hundredth)
0.83 cents
Sampson collects baseball cards. One card has increased by 225%. It now is valued at $56. What was the value of the card before it went up? (Round to the nearest whole dollar)
$25
Paul is thinking of a number. He says that 4 times his number minus six tenths is equal to two tenths. What is his number?
a. 0.2
b. -0.1
c. 3.2
d. -1.6
a. 0.2
What is the mean of this set of data?
8, 14, 12, 10, 18, 12, 38, 56
Mean = 21
Place these in order from least to greatest.
10/12, 0.41 , 7/8 , 34% , 2/5
34% , 2/5 , 0.41 , 10/12 , 7/8