Expressions
Simplify
3x+4x
What is 7x?
Solve: x+4<10
What is x<6 ?
Solve: 5x=25
what is x=5?
A movie ticket costs $8. How much for 3 tickets?
What is $24?
THREE classifications of solutions
What is one solution, infinitely many, and no solution?
Evaluate 2y+5 when y=3.
What is 11?
Solve: 3x ≥12
What is x≥4 ?
Solve and identify solution type: 6x+9=3(2x+3)
What is 9=9 , infinitely many solution?
Samantha paid $10 to join an online book club. Then she paid $3 per e-book that she read. She has spent more than $40. How many e-books did she read?
what is x>10 ?
The number in front of the variable is called ?
what is a coefficient?
Expand: 2(x+6)
What is 2x+12 ?
Which represents "a number y is less than 10"?
what is y<10?
Solve: 3(x−2)=12
What is x=6?
Henry gardens for 15 hours and mows lawns for x hours. For each job, he is paid $9 per hour. He wants to earn at least or equal to $252 per month. Write an inequality to model this situation.
135 +9x ≥ 252
A ________ is when two inequalities are combined into one statement using the words “and” or “or.”
what is a compound inequality?
What are the coefficients ? 7y-4+2y-165w-96+88e
what is 7, 2, -165, 88 ?
Solve -2x + 6 > 10
what is x<−2 ?
For what value of n does the equation 3(x − 2) = 7x + n have a solution of x = 0?
What is n= -6?
Sarah has at most $50 to spend. If a video game costs $20, write an inequality for how many games (g) she can buy.
What is 20g≤50?
If you multiply or divide both sides of an inequality by a __________, you must flip the inequality sign.
What is a negative number?
Write an expression for: "five more than twice a number."
What is 2x+5 ?
Translate into an inequality: "A number minus 5 is no more than 12."
Special rule !!!
What is x−5 ≤ 12 ??
2.25x + 15 = 9.5x + 0.5
What is x=2 ?
A cell phone plan costs $25 per month plus $10 per GB of data. Write an expression for the monthly cost with "d" being the GB of data.
What is 25+10d ?
y=mx+b
m= _________( _______)
b= ___________
What is m= slope ( rate of change) , b= y-coordinate ?