Riddles
I have 2 coins that equal 30 cents, one of them is not a quarter. What are the coins?
A quarter and a nickel
Evaluate:
-4 + 7
3
What is the standard equation for a proportional relationship?
y = kx
What is the value of the expression below when x=4?
3x - 3
9
Solve the inequality and graph the solution
-2 < -11 + x
x > 9 or 9 < x
How can you add eight 8’s together and get 1,000?
888 + 88 + 8 + 8 + 8
Evaluate:
-1 - 9
-10
What are the two criterias of a proportional relationship?
1. Has to go through (0,0) or the origin.
2. Has to be a straight diagonal line.
What is the value of the expression below when y=2?
8y - 7
9
Solve the inequality and graph the solution
6x < 36
x < 6 or 6 > x
I add five to nine and get two. The answer is correct, but how?
9 am + 5 hours = 2 pm
Evaluate:
10 + (-6) + (-2)
2
Alejandro practices the piano 1470 minutes in 5 weeks. At what rate did she practice, in minutes per day?
42 minutes per day
Solve for c:
83 = 6c + 476
Solve the inequality and graph the solution
5x + 2 > 27
x > 5 or 5 < x
You are given three positive numbers. You can add these numbers and multiply them together. The result you get will be the same. What are the numbers?
1, 2, and 3
Evaluate:
7 * (-2)
-14
A company orders 23 boxed lunches from a deli for $174.80. If each boxed lunch costs the same amount, what is the unit cost of each boxed lunch?
$7.60
What is the value of the expression below when w=6 and x=7?
10w + 7x
109
A group of friends wants to go to the amusement park. They have no more than $140 to spend on parking and admission. Parking is $18, and tickets cost $30.50 per person, including tax.
Write an inequality that represents the situation.
140 > 18 + 30.50p
What is the smallest number that increases by 12 when it is flipped and turned upside down?
86
Evaluate:
(-70) / 7
-10
Aria's earnings on the job:
Time (hours) Earnings (dollars)
18 $451.80
23 $577.30
29 $727.90
What is the constant of proportionality?
25.1
Solve for x:
-99 = 9x + 9
x = -12
A group of friends wants to go to the amusement park. They have no more than $140 to spend on parking and admission. Parking is $18, and tickets cost $30.50 per person, including tax.
Solve for p.
p < 4