Step-by-step explanation:
5×a×5×a
collect like terms
5×5×a×a
25×a^2
25a^2
Only the 3. option can be used. All other values dont fit
There are 84 because if they have the same amount and when you add 42 it's doubled 42+42=84 84/2=42 so she will end up with 84
Answer: $324
Step-by-step explanation:
i=prt
i=(6000)(.054)(1)
i=324