1.1
1.2
1.3
1.4
100
50 pts: Give an example of an expression. 50 pts: What is a rational number?
1. x, 2x-1 2. A rational number can be written as a fraction.
100
What integers make both inequalities true? x≥0 and 4>x
0, 1, 2, 3
100
How many solutions does an absolute value equation have? What are the exceptions? (hint: there are 2)
Absolute value equations have 2 solutions. Exceptions: =0, only 1 solution or = a negative number, no solutions
100
Translate the following: - the absolute value of a number and 4 - five less than three times a number - the difference between sixteen percent of a number and 1
/x+4/ 3x-5 .16x-1
200
*On white board*
7/8
200
Simplify and graph the answer: -x+2<0
x>2 graph *on board*
200
/-4-(-2)/=?
2
200
The sum of two consecutive odd integers is -148. Find the two integers.
-75, -73
300
Give an example of all three types of equations.
Conditional: 2x-1=4 Contradiction: 3x+4=3x-7 Identity: x+1=x+1
300
Solve and graph your answer. Write your answer in interval notation. a+4<-1 and 3a-5<7
a<-5 and a<-4 Graph *on board* (-infinity, -5)
300
Solve: /3x-4/+7=0
No solution
300
John buys a fridge for $895. He used his 15% discount. What was the original price of the fridge? Round to the nearest cent.
$1005.62
400
Solve for a: L= t(a+2)-b
a= (L+b)/t -2
400
Solve and graph. Write answer in interval notation. 7+2t<-1 or 3≥13-5t
t<-4 or t≥2 Graph *on board* (-infinity, -4) U [2, +infinity)
400
*on board*
c= 20 and c=-40
400
Plan A costs $85 plus $40 an hour. Plan B costs $60 an hour. When is Plan A better than Plan B?
x>4.25 hours
500
*On white board*
3/4
500
Solve and graph. Write in interval notation. 4<2x-1<9
2.5
500
*on board*
x=-1
500
Find three consecutive odd integers who sum is between 27 and 51.
9, 11, 13
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