Expression 20 – 3J represents the change in dollars, which construction worker will receive after buying J bottles of juice.
Solution:
Given that
A construction worker bought several bottles of juice for $3 at the comedian store
She paid for them the $20 bills
Number of bottles of juice is represented by variable J
Need to write an expression for the change she receives.
From given information
Price of 1 juice bottle = $3
[tex]\text { So price of J juice bottles }=\mathrm{J} \times \text { Price of } 1 \text { juice bottle }[/tex]
[tex]=\mathrm{J} \times 3=3 \mathrm{J}[/tex]
Change she receives = Amount she paid - price of J juice bottles
=> Change she receives = 20 – 3J
Hence expression 20 – 3J represents the change in dollars, which construction worker will receive after buying J bottles of juice.
