These points are unclear to read could you maybe upload a picture of the problem?
C. $693.33. Just round. It helps. Round 2,080 to 2,100. Then whats 30% of 2,100? It's easy just think of 21 divided by 3, which equals 7. So, 700 and the closest answers to that is $693.33. That's just the easy way instead of doing the math out. And it is also common sense that B or D wouldn't be it. So your left with C or A. :)
Answer:
49
Step-by-step explanation:
(-7)² = -7 × -7
-7 × -7 = 49
