Find the solution of x + 8 = 10, and verify your answer using substitution.
find the solution of y − 3 = 5, and verify your answer using substitution.
find the solution of 3x = 12, and verify your answer using substitution.
is x = 3 a solution to the equation 3x + 9 = 0?
is y = −2 a solution to the equation 3y + 8 = 2?
sam scored 12 points on a math quiz, and he scored 3 points fewer than alicia. write an equation for this situation, and find alicia's score.
susan has $21, and she has three times as much money as diego. write an equation for this situation, and find how much money diego has.
display each of the following inequalities on a number line:
a. x > 3
b. x < 5
c. x ≤ −2
d. x ≥ 0
e. −1 ≤ x < 3
is x = 3 a solution to the inequality 2x + 4 < 12?
is y = −2 a solution to the inequality 4 − y ≥ 8?