If i’m not wrong the answer should be B
Answer:
Option 4:
is the correct answer.
Step-by-step explanation:
The given fractions are mixed fractions. the mixed fractions have to be converted into proper fractions before performing any operation like addition, subtraction etc.
Given fractions are:

Converting into proper fractions

Making the denominator same
We have to multiply first fraction by 3 and second by 6

Converting into mixed fraction: 
Hence,
Option 4:
is the correct answer.
Answer:
c. t=±x√2a
Step-by-step explanation:
Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it
Answer:
24 square feet
Step-by-step explanation:
The purple part is 2 feet wide and 12 feet long. 2*12=24