Answer: 8 weeks
Step-by-step explanation:
He originally had $315 in his account. This figure increased to $955. It therefore increased by:
= 955 - 315
= $640
If he deposited $80 every week, the number of weeks it would take to deposit $640 is:
= 640/80
= 8 weeks
To put in simple terms, a reciprocal is a flipped fraction. This is used when you are dividing fractions.
Answer:
-1
Step-by-step explanation:
Note that
, and this means that every 4 terms, the terms cancel to 0. Therefore, by taking modulo 4, we only need to find
since $i$ has a cycle of 4.
I'm not 100% but I got x=-3/2
Step-by-step explanation:
The answer is

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