Chapter 1.2, Problem 41HP

To determine

To write: an algebraic expression having two different variables and operations

Answer to Problem 41HP

The cost of 4 shirts and one trouser is $12

Explanation of Solution

Calculation:

So, to find algebraic expression for this problem

Consider the price of shirt be x and price of trouser be y.

Then the expression representing the above problem is

  $4x+y$

Where $x=2$ and $y=4$

Now, Substituting x and y, we have that

  $4x+y=4\times 2+4$

Now, y order of operations, multiply first and then add. So,

  $\begin{array}{l}4x+y=4\times 2+4\\ =8+4\\ =12\end{array}$

Conclusion:

Thus, the cost of 4 shirts and one trouser is $12