B^-2 / b^-3 = b^(-2-(-3) = b^1 = b
answer is d
4 times 7 = 28
3 times 7 = 21
It will take him 21 days to make 28 bird houses.
I am pretty good at any math and I love a good challenge. What is your question because I'd be glad to help!!!
Step-by-step explanation:
area of square = l^2
so 10^2
100cm^2
