4 and 1/4 feet is your answer my friend
I’m not extremely good at math but I think you need to make -x-y=1 into y=mx+b form and then solve your new equation!
this is an example of linear equations is one variable
The unit rate is $1.25 per pound
1 times 10^1=10
1 times 10^-1=1/10
1 times 10^-2=1/100
1 ten thousandth is 1/10,000, that is 1 times 10^-4
answer is
1*10⁻⁴