Chapter 1.4, Problem 51SR

(a)

To determine

To calculate:To find the expression to show the total cost of items

Answer to Problem 51SR

Expression to show the total cost of items is $\left(3s+16\right)$

Explanation of Solution

Given information:Melinda purchased the items shown in the table

Item	Price($)
Sweater	s
Purse	s+12
Belt	s+4

Calculation:

Price of sweater $=s$

Price of purse $=s+12$

Price of belt $=s+4$

Now, total cost of items is calculated as

  $\begin{array}{l}Total=s+\left(s+12\right)+\left(s+4\right)\\ Total=\left(s+s+s\right)+\left(12+4\right)\\ Total=3s+16\end{array}$

Thus, expression for total cost is $\left(3s+16\right)$

(b)

To determine

To calculate:To find the money spent by Melinda if the cost of sweater is $\$25$

Answer to Problem 51SR

Money spent by Melinda is $\$91$

Explanation of Solution

Given information:Expression for total cost is $\left(3s+16\right)$

Calculation:

Expression is given as $\left(3s+16\right)$

Given that price of sweater is

  $s=\$25$

Thus, substituting the value of $s=\$25$ ,

  $\begin{array}{l}Total=3\left(25\right)+16\\ Total=75+16\\ Total=91\end{array}$

Thus, Melinda spent $\$91$ in all