PLS HELP ME ASAP FOR 7. A and B! (SHOW WORK!!!) + lots of points

1 answer:

Over [174]2 years ago

3 0

So...
ANS of
7(a)=(30)+(n x 20) {n=n. of hours}

7(b)= with my mind

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GrogVix [38]

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The reasoning is 20C15.
20!
---------------
(20-15)!15!

The answer to that is 15,504.
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