for 
Q3: Five times the sum of a number
Q4: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q5: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q6: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q7: The product of a number x and
Q9: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q10: Evaluate the expression when x is -9.
Q11: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q12: Solve the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Solve the
Q13: Simplify both sides as much as possible,