Answers pretty please?

1. Construction
First multiply 8 to 10 to get the area
8 x 10 = 80 feet
Times by 1.75 to get the cost
80 x 1.75 = 140
The cost would be $140
2a. 2/4 + 1/4 = 3/4
You need to get a common denominator to add fractions. You need to think what times 2 is 4 and times it to both the denominator and the numerator
2b. 6/8 + 1/8 = 7/8
2c. 5/8 + 4/8 = 9/8 which is also equal to 1 and 1/8
3a. 0.47n = 14
29.7872340426
3b. 11.25
3c. 17. 647058823%