Answer:
y= 115
Explanation:
Step one:'
given data
The total charge for this cabin is represented by the equation
![y=4x+35](https://img.qammunity.org/2021/formulas/mathematics/college/qsilkw0wx2r7jr4vj9qqit8jkm5my7mr51.png)
we are told that y represents the total cost and x represents the length of stay in days
Required:
the value of y when x= 20
Step two:
substitute
![y=4(20)+35\\\\y=80+35\\\\y=115](https://img.qammunity.org/2021/formulas/mathematics/high-school/ds21zba3gbsiw70v3ysmp3fvq75y69d08k.png)