Equations and Functions
Solving Equations
Challenge -- systems of equations and exponents
Percents
100
In the equation f(x) = 6x + 38, the starting value (or y-intercept) is?
38
100
4x = 32
x = ?
x = 8
100
Based on the table below, how long will it take for Company G's earnings to be higher than Company F?
5 years
100
What is 15% written as a decimal?
0.15
200
In the equation g(x) = 31x - 9, the rate is?
31
200
-2x - 3 = 17
What is the first step you would take to solve this equation?
Add 3 to both sides
200
What is 43% of 5,098?
2192.14
300
m(x) = 3x - 2
m(5) = ?
3 * 5 - 2
15 - 2
13
300
Solve: -3x + 6 = 30
Subtract 6 from both sides
-3x = 24
Divide both sides by -3
x = -8
300
A pastry business made $84,000 in profit last year. Of that, $49,000 came from selling cakes. What percent of their total profit came from cakes?
58.33%
400
You are trying to save up $600 in total. Your job pays $20/hour, and you already have $200 saved. Write an equation to find how many hours you would need to reach your goal.
600 = 20x + 200
400
Solve: 4(x - 2) = 28
Divide both sides by 4
x - 2 = 7
Add 2 to both sides
x = 9
400
Sara's gross income this pay period was $2100. She paid 21% in taxes and other deductibles. What is her net pay?
$1659