This is an arithmetic sequence with first term (a) = 11, number of terms (n) = 57, sum of nth term (Sn) = 19,779.
Let the amount of money she saved more each month be d, then
Sn = n/2(2a + (n - 1)d)
19,779 = 57/2(2(11) + (57 - 1)d)
19,779 = 28.5(22 + 56d)
19,779 = 627 + 1,596d
19,779 - 627 = 1,596d
d = 19,152/1,596 = 12
Therefore, she saved $12.00 more each month.
Answer:
0.04946524064
Step-by-step explanation:
or is it 748/37
♡ The Question/Task(s)! ♡
<em>-Which function can be used to determine the number of rocks, r, a child will collect after w weeks?</em>
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♡ The Answer(s)! ♡
<em>-The answer is, </em><em>r = 5w + 15!</em>
<em>I apologize in advance if the answer is incorrect! ♡ </em>
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♡ The Explanation(s)/Step-By-Step! ♡
<em>-No Explanation(s)/Step-By-Step provided!</em>
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♡ Tip(s)! ♡
<em>-No Tip(s) Provided!</em>