Question

Please show all the work as to how you got the answer. I really need the help and how to show the work. Thank you for your help.

Answer 1

4+4=8
10+10=20
20+20=40

Answer 2

12)

A=LW in this case:

A=10*4

A=40 ft^2 (40 square feet)

13)

Since when rounding to the nearest 100, it rounds to 400, the number must be greater than or equal to 350...

n≥350

When rounded to nearest 10, it rounds to 350, so n<355....

350≤n<355

Only C., 352 can satisfy the inequality.