Expressions, Equations, and Inequalities

Choose the first step in solving the following equation.
-3y - 12 = 14

• add 3 from both sides

• add 12 to both sides

• subtract 12 from both sides

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

"Twenty-four minus three times an integer, x, is less than x minus four."

Write an inequality, in terms of x, to represent this information.

Mathematical Equivalence

OFF

Match the following

• Has an equal sign

• System of Inequalties

• more than one line

• System of Equations

• Double shaded region

• Expression

• has an inequaltiy symbol

• Equation

• no equal sign or inequality symbol

• inequality

• A
• B
• C
• D

• X=12   Y= 18
• X=15   Y=18
• X=2     Y= 15
• X= 4    Y=12

• Malina earns $9.25 per hour babysitting.  She needs $85 to attend a concert.  If she spends at most $120 on clothes at the mall, how many hours must Malina work to be able to afford the concert?

• Malina babysits for 9.25 hours.  She needs a maximum of $85 to attend a concert.  If she spends $120 on clothes at the mall, how much money must Malina earn per hour to be able to afford the concert?

• Malina earns $9.25 per hour babysitting.  She needs a minimum of $85 to attend a concert.  If she spends $120 on clothes at the mall, how many hours must Malina work to be able to afford the concert?

• Malina babysits 9.25 hours.  She needs more than $85 to attend a concert.  If she spends $120 on clothes at the mall, how much money must Malina earn per hour to be able to afford the concert?

Choose the equivalent expression

3(2c - 5)

• 6c - 15

• 6c + 15

• 6c - 5

• -6c - 5