Surely not;
5a+a-9b-6b
6a-15b
So,
5a-9b+a-6b=6a-15b
It's not equal to 6a-15
Answer should be <span>Both Fred's and Victoria's proofs are correct.</span>
Answer:
Betsy will save $121 in 5 weeks.
Step-by-step explanation:
We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..
To find the sum of our geometric sequence we will use
, where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.



Therefore, Betsy will save $121 in 5 weeks.
Answer:
x=2
Step-by-step explanation:
4-(2x-3)=3
2x-3=4-3
2x-3=1
2x=1+3
2x=4
x=4/2
x=2