Forming equations from context Quiz

1. I think of a number, double it and add 7 to get 25. Which equation is correct?

• A. $2(x+7)=25$
• B. $2x-7=25$
• C. $2x+7=25$
• D. $x+14=25$

2. The angles of a triangle are $x^\circ$, $(x+20)^\circ$ and $(2x-40)^\circ$. Find $x$.

• A. $x=50$
• B. $x=55$
• C. $x=40$
• D. $x=45$

3. A gym charges AED 100 to join plus AED 40 per month. What is the greatest whole number of months for a budget of AED 500?

• A. $12$
• B. $11$
• C. $9$
• D. $10$

4. Which phrase matches $x\ge18$?

• A. more than 18
• B. at least 18
• C. fewer than 18
• D. at most 18

5. Solving a problem gives $t=7.5$ tickets. What should you do?

• A. State that the answer is 7.5 tickets.
• B. Decide that the answer must be 0.
• C. Check 7 and 8 against the conditions, because tickets are whole numbers.
• D. Round down to 7 without checking.