A dollar store sells items for $1 and $2. You plan to go there and spend at least $20. Let x stand for the number of one-dollar
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we have
Step
<u>Clear the variable y</u>
Adds both sides
Step
<u>Convert in function notation</u>
Let
therefore
<u>the answer is</u>
The Given Sequence is an Arithmetic Sequence with First term = -19
⇒ a = -19
Second term is -13
We know that Common difference is Difference of second term and first term.
⇒ Common Difference (d) = -13 + 19 = 6
We know that Sum of n terms is given by :
Given n = 63 and we found a = -19 and d = 6
The Sum of First 63 terms is 10521