Write the following verbal expressions as mathematical expressions. Use y as the variable.
Verbal Expression | Mathematical Expression |
Comments |
(a) The product of a number and 3 | 3y | The word product indicates multiplication. |
(b) Four times a number | 4y | The word times indicates multiplication. |
(c) Two-thirds of a number | \frac{2}{3}y | The word of indicates multiplication. |
(d) A number divided by 2 | \frac{y}{2} | The word quotient indicates division. |
(e) The sum of 3 and a number is multiplied by 5 | 5(3 + y) | This requires parentheses. |
(f) 7 is multiplied by the difference of an unknown number and 14 |
7(y – 14) | This requires parentheses. |