Algebra Toolkit Quiz

1. Simplify $4x + 3y - x + 5y$

• A. $3x + 8y$
• B. $5x + 2y$
• C. $3x + 2y$
• D. $4x + 8y$

2. If $a = 5$, what is $3a + 2$?

• A. $15$
• B. $17$
• C. $21$
• D. $13$

3. Which of these is an equation, not an expression or formula?

• A. $3x + 4$
• B. $3x + 4 = 10$
• C. $A = lw$
• D. $5xy$

4. If $p = -3$, evaluate $p^2 + 4$

• A. $-5$
• B. $1$
• C. $13$
• D. $7$

5. A plumber charges a £20 call-out fee plus £15 per hour $h$. Which formula gives the total cost $C$?

• A. $C = 20h + 15$
• B. $C = 35h$
• C. $C = 20 + 15h$
• D. $C = 15 - 20h$