Variables, Expressions & Number of Solutions
A student uses x to represent the number of hours studied. What does x stand for?
What is a variable?
Solve x+9=23.
What is x = 14?
Write an inequality for “a number is greater than 12.”
What is x > 12?
What does absolute value tell you?
What is distance from zero?
A student buys 3 notebooks for 4 dollars each and a pen for 2 dollars. What is the total cost?
What is 14 dollars?
A notebook costs n dollars. Write an expression for 4 notebooks and a 3-dollar pen.
What is 4n+3?
Solve 4y = 36
What is y = 9?
Solve x − 4 ≤ 9.
What is x ≤ 13?
What is ∣−13∣?
13?
A rectangle has a length of 9 inches and a width of 4 inches. What is its area?
What is 36 square inches?
A gym charges a 12-dollar signup fee plus 8 dollars per month. Write an expression for mm months.
What is 8m+12?
Solve 2x + 5 = 19.
What is x = 7?
Solve 3m > 24.
What is m > 8?
Solve: |92| + |-36|
What is 128?
A number is multiplied by 3, then 6 is added, and the result is 24. What is the number?
What is 6?
Does 4(x + 2)= 4x + 8 have one solution, no solution, or infinitely many solutions?
What is infinitely many solutions?
Solve 3(x − 4) = 21.
What is x = 11?
A student wants to spend no more than 30 dollars. She already spent 12 dollars. Write and solve an inequality for the amount she can still spend.
What is x ≤ 18?
A number has an absolute value of 7 and is less than 0. What is the number?
What is -7?
A store gives a 20% discount on a 50-dollar item. What is the sale price?
What is 40 dollars?
Determine number of solutions in 2(x + 3) = 2x - 1. Explain by simplifying both sides.
What is No solutions (ϕ) ?
Solve 5(x + 2) − 3 = 42.
What is x = 7?
A school is booking a venue that costs a $1,500 base fee plus $0.02 per flyer printed. The school wants the total cost to be at least $1,900. How many flyers, xx, can they print?
What is x ≥ 20,000?
Solve | | 2x + 5 | − 3 | = 8
What is No Solutions (xEϕ)?
A taxi charges a 18-dollar start fee plus 6 dollars per mile. Write an equation to represent the cost of m miles if the total cost is 72 dollars.
What is 18 + 6m = 72?