You can use this one app it’s called Cymath it’s really helpful with these types of problems,
it literally gave you the equation lol
y= 6x + 1/2
Answer:

Step-by-step explanation:
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Answer:
C) 273 ft²
Step-by-step explanation:
7x11x3=231
2x1/2x7x6=42
231+42=273