A ride-sharing company claims that the cost of rides follows a Normal distribution with a mean of $10.52. After paying for a ride from this company, a rider reports that his price is in the 85th
percentile of all other riders' prices. If this rider paid $15.93, what is the approximate standard
deviation of this company's ride-sharing cost?

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step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

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step-by-step explanation:

ever thing time 1 is a multiply by 1 it get