Chapter 1 - Ratios/Proportional Reasoning
Find the unit rate.
92 miles driven using 4 gallons of gas
23 miles per gallon
Set up a proportion or equation & solve.
What number is 15% of 38
5.7
Solve.
-34 - (-20)
-14
Rewrite using the distributive property.
2(2x - 3)
4x-6
Solve the equation.
4x=12
x=3
Graph x>5
open circle, arrow to the right.
(1/5)/(3/10)
2/3
30 is what percent of 60?
50%
Solve.
-24 div -3
8
Simplify the expression.
8x + 2 - 11x + 1
-3x + 3
Solve the equation.
x+3=-10
x=-13
Solve the inequality.
x+3>13
x>10
What are the two things a graph needs in order to be proportional?
Graph - straight line & pass through origin
15 is 20% of what number?
75
Evaluate.
|3| - |-5|
-2
Add the linear expressions
(3x - 5) + (-4x - 5)
-x+-10
Solve the equation.
2x+5=15
x=5
Solve.
-10 >x - 3
x<-7
Solve the proportion
x/5 = 9/15
Find the percent of change. State if increase/decrease.
15 ft to 23 feet
53% increase
Solve
-8 x 7
-56
(9x-12) - (5x-7)
4x-5 or 4x+-5
Solve the equation
-4x - 6 = -14
x=2
-10 le x
Graph the inequality
close arrow to right