CPM Homework Help : AC Problem 7-78

Multiple Choice: The cost of a sweater is $$3$ less than the cost of a pair of jeans, while a hat is twice the cost of a sweater. If the pair of jeans costs $j$ dollars, then which expression below represents the cost of the hat?

$2j$

$j-3$

$2(j-3)$

$2j-3$

Hint 1:

First find the cost of a sweater using the variable $j$ .

$\text{Sweater}=j-3$

Hint 2:

Using that information, can you find the price of the hat?

Answer:

$\text{Hat}=2\left(j-3\right),$ (c)