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Equations & inequalities
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100
What is x - 3 = 12?
15
100
What is (-1/3) + (3/8) ?
1/24
100
What is √0?
0
100

79.9 is 99% of what?

80.7

100
Write 0.000009123 in scientific notation
9.123 x 10-6
200
Solve for x: x + 19 = 4x - 2
x = 7
200
(2+(4/5)) - (5/8)
2+(7/40)
200
What is -√(49/196)
-1/2
200

Find the percentage change from 199 ft to 92 ft.

53.8% decrease

200
Find the GCF of 55 and 75
5
300
What is the solution of x below? 2 ≤ 2x+1 < 3
[0.5,1)
300
(-3/2) ÷ (-10/7)
21/20
300
Solve for a: -8 + √(5a-5) = -3
6
300

The price of a King Size Candy Bar went from $1.50 to $2.50 over a period of 4 years. Find the average increase per year.

25 cents per year

300
8−1− (18−2)÷8
5
400

Altogether, Michael and his two friends have exactly $30 to spend on lunch. Hot dogs cost $3.50 and drinks cost $1.50. If they each get two hot dogs, how many drinks can they buy?

6 drinks

400

A certain sequence is A, B, D, C, A, B, D, C, etc. What is the 90th term in the sequence?

B

400
∛8 = ?
-2 and 2
400

If the average of x and y is 11 and the average of x, y, and z is 5, what is the value of z?

z = -7

400
(4−1+8÷8)×5
20
500
Solve for x: −5(1−5x)+5(−8x−2)=−4x−8x
x = -5
500

Sarah wanted to make jump ropes for herself and her friends, so she went to a store and purchased 100 feet of rope. If each jump rope is 7 feet long, how many jump ropes could Sarah make and how many feet of rope will she have left over?

14 jump ropes with 2 feet left over.

500
√(18a2) * 4√(3a2)
12a2√6
500

12 students took a test and their average score was 85. However, Bob was "sick" in Las Vegas that day. After Bob took the test, the average score dropped to 82. What was Bob's score on the test?

46

500

Write out all the primes less than 20 and give the definition of prime number.

{2, 3, 5, 7, 11, 13, 17, 19} Prime number is a number that is only divisible by itself and one while 1 is not a prime number.