Is it asking how many she began with before she sold them? If so, then I think at the beginning she started out with 40. I think she had 40 because she sold half, and when you divide 40 by 2 it divides perfectly giving you 20. Then add 16 to that and you come out with 36.
9514 1404 393
Answer:
B. √900
Step-by-step explanation:
The solutions to the equation are ...
x = ±√900 = ±3√100 = ±10√9 = ±30
Of the offered choices, the only one that matches any of these is ...
√900
Answer:
r=2
Step-by-step explanation:
The third one is the answer
