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3 years ago

12

Kate wants to buy a bike that costs $250. She has $40 saved. She will also do 5 days of yard work earning $38 for each day. Will

Kate have enough money for the bike? I need a answer ASAP!!

2 answers:

Alex Ar [27]3 years ago

4 0

Unfortunately, Katie will be $20 short

She has $40
Plus the $38 x 5 she will be earning which is $190
$190+$40 is $230

Looks like Kate needs one more day of hard work to get her bike ; )

TEA [102]3 years ago

3 0

40 + 5(38) = 40 + 190 = 230....nope, she is short by 20 bucks

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The operator of a pumping station has observed that demand for water during early afternoon hours has an approximately exponenti

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Answer:

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The operator of a pumping station has observed that demand for water during early afternoon hours has an approximately exponential distribution with mean 100 cfs (cubic feet per second).

This means that $m = 100, \mu = \frac{1}{100} = 0.01$

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$P(X > x) = e^{-\mu x}$

This is P(X > 190). So

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