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4 years ago

HELP NEED QUICKLY ILL GIVE A BRAINLIEST!!!

Mathematics

2 answers:

bogdanovich [222]4 years ago

8 0

A) X intercept is -12, this represent the number of weeks before her birthday she started saving money

B) Y intercept = 3, this is the amount of money she has in her piggy bank before her birthday

C) slope = change in Y over the change in X = 1/4, this means she is saving 25 cents per week

Alina [70]4 years ago

6 0

The x intercept is -12 and it represents the amount of money she started with.
the y intercept is +3 and it represents the amount of money she has now.
the slope is positive and it represents the amount of money shell get in the future

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4 years ago

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$\displaystyle \sum_{i=1}^N (a-2(i-1)) = (a+2)\sum_{i=1}^N - 2\sum_{i=1}^Ni = (a+2)N - 2\cdot\dfrac{N(N+1)}2 = (a+1)N-N^2$

so that in the previous equation, the sums reduce to

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2 years ago