Rational #s
2 1/5 - 1 3/5 =
3/5
Simplify the expression:
16b + 5c - 10 - 8c + 2b
18b - 3c - 10
Solve:
200 < x - 165
x>365
How do you find the constant of proportionality?
k=y/x
Multiply by the reciprocal!!
-3/4 + (-3/8) =
-1 1/8
Simplify the expression:
-0.9y + 4.4y - 3.2y
0.3y
Solve and graph the inequality:
-x >7.5
x<-7.5
What is the constant of proportionality?
y=2.75x
2.75
Simplify the expression:
2x2 - 3x + 12x - 5y2
2x2 -5y2 + 9x
7/8 * - 6 =
-5 1/4
Solve the equation:
-14 + 3d = 13
d=9
Solve the inequality:
12 < 6 + 1/2x
x>12
A 12 ounce latte costs $3.00. Write an equation that relates the cost in dollars, y, to the number of ounces, x.
y=0.25x
Write an equation, and make a table and graph for the following situation.
A video game store will earn $65 for every 5 games purchased.
y=13x
-2.4 + (-3/5) =
-3
Solve the equation:
5.2n - 3.8 = -14.2
n=-2
Joe's savings account has $300. Every month he spends $15 on a music subscription. What is the maximum number of months that Joe can withdraw the money without allowing his balance to drop below $140?
Less than or equal to 10 months
What are the two things that are needed in order for a relationship to be proportional?
1. Constant of proportionality (increases by the same every time).
2. Starts at (0,0)
Mr. Ken purchased two basketballs and a pair of shoes. The shoes cost $95. If the grand total was $146, how much did each basketball cost?
$25.50
A group of 12 teachers are setting up for a basketball game. They spent $23.50 on banners, $52.67 on food and $82.23 on drinks. If they all split the cost evenly, how much does each teacher owe?
$13.20
2/3c + 6 = 12
c=9
-5.6x - 10 < 18
x>-5
Find the unit rate for each of the following.
-Runs 1/3 of a mile every 1/4 hour.
-Runs 5/6 of a mile every 3/4 hour.
-Runs 3/4 of a mile every 1/2 hour.
- 1 1/3 miles per hour
- 1 1/9 miles per hour
- 1 1/2 miles per hour
-2(10 - (n/2)) = 5
n=25