Operations
Evaluate:
5 - 13
-8
Simplify:
4x + 7x − 3
11x - 3
Solve for a:
7a + 49 = 70
a = 3
Evaluate:
5x - 7
when x = 4
13
Graph the inequality on a number line:
x > 4
See whiteboard
Evaluate:
33 ÷ -3
-9
5(2y − 3) + 4y
14y - 15
Solve for x:
10x - 4(x + 2) = 28
x = 6
Evaluate 2x + 3x - 6x + 2 when x = 0.5
1.5
Graph the inequality on a number line:
14 ≥ x
See whiteboard
sqrt(144)
12
6a - 2(a + 5) + 7a
11a - 10
A painter rented a wallpaper steamer at 9 a.m. and returned it at 4 p.m. He paid a total of $28.84. What was the rental cost per hour?
$4.12
Evaluate:
3a + 4b - 2a2
when a = 2 and b = 5
18
Solve the following inequality:
-2x + 6 > 10
x < -2
8 + (15 ÷ 3) × 4 − 6
22
(3x)(4x) − 5x2 + 2x
7x2 + 2x
The cost to purchase bags of coffee is given by C = 7.50 + 15B, where C is the total cost of the order and B is the number of bags. How many bags were ordered if the total cost of the order was $97.50?
B = 6
What is the value of 36x - 8y2 when x = 3 and y = -6?
-180
Solve the following inequality:
10x + 4 ≥ 7x - 8
x ≥ -4
48 ÷ 2(9−3)2 + 5(14 − 8 ÷ 4)2
1,584
(12x^2y)/(4x)+3x(2y - x)
9xy - 3x2
Solve for y:
3(y - 7) - 4 = 25 - 2y
y = 10
Evaluate when x = 6 and y = 2
(2x^2y - 3xy^2)/(4x)
3
Solve and graph the following inequality on a number line:
-3(x + 3) + 6 < 6
x > -3
See whiteboard for graph