Thomas has a savings goal of $432 to buy a new gaming console. He has $96 in the bank, and he earns $12 per hour at his part-time job. How many hours does he need to work to reach his goal?
28 hours
Solve 81x^2 = 49. Give your answer as a fraction.
x = 7/9
What is the *first step* in solving 2x + 4 = 7?
Subtract 4 from both sides
10(2x-5) +2x = -94
x = -2
7x - 4x + 3 = - 15
x = -6
What is the *first step* in solving 4 - x = 3?
A) Subtract 4 from both sides, or B) Add x to both sides
x^2 = -36
None! There is no number that multiples with itself to make a *negative* number
The MHS footy team purchased uniforms and equipment for a total cost of $937. The equipment cost $612, and the uniforms cost $25 each. How many uniforms did the school purchase?
13 uniforms
x + 7 = 15
x = 8
(x+4)/2 = 7
x = 10
What is the *first step* in solving 7x - 6 = 15?
Add 6 to both sides
What is the *first step* in solving x/3 = 15?
Multiply both sides by 3
5x = 60
x = 12
-20x + 45 = 2x -21
x = 3
4x +12 = -2x + 132
x = 20
-5x + 10 = x + 52
x = -7
x^2 = 16
x = +4, -4
3x^2 = 75
x = +5, -5
5(3x+2) - 5x = 120
x = 11
What is the *first step* in solving 4x = 16?
Divide both sides by 4
12x + 8x -50 = 150
x = 10
5x +2 = -10x + 92
x = 6
12x + 30 = -54
x = -7
-3x +20 = -6x +5
x = -5
- 5x + 9 = -1
x = 2
Maddy’s cell phone company charges $35 a month for phone service plus $0.50 for each text message. How many text messages does Maddy send in a month if her bill was $52?
34 text messages
x/6 = 4
x = 24
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