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Amanda [17]
3 years ago
7

Twenty-six students will attend the field trip to the career center. The cost to attend the career center is $x. Fifteen of thes

e students will pay an additional $3 to attend the automotive class. Which expression represents the total cost?
( F ) 15(x + 3) + 26x

( G ) 26(x + 3)

( H ) 26(x + 3) + 15x

( I ) 15(x + 3) + 11x
Mathematics
1 answer:
dexar [7]3 years ago
4 0
Answer=I

15(x+3)+11x    represents the total cost

To solve for this, let's look at the information that we know...

26 students go on the trip

15 students pay $3 more for an additional class (x+3)

26-15=11

11students pay, x, the price of the trip.

So 15(x+3) represents the 15 students who pay for both the trip and the automotive class, and 11x represents the students who simply just pay for the cost of the trip.

Thus, 15(x+3)+11x represents the scenario
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We convert to z-scores to get:

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Part c)

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Apply correction factor to get:

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We convert to z-scores:

P(X \: > \: 10.5) = P(z \: > \:  \frac{10.5 - 19.29}{4.33} )  \\ = P(z \: > \:  - 2.03)

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We want to find the probability that:

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Convert to z-scores:

P(23.5  \:  <  \: X \:  <  \: 28.5) = P( \frac{23.5 - 19.29}{4.33}   \:  <  \: z \:  <  \:  \frac{28.5 - 19.29}{4.33} ) \\  = P( 0.97\:  <  \: z \:  <  \: 2.13) \\  = 0.1494

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