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vichka [17]
3 years ago
14

Seven friends have similar cell phone plans. The price of each plan is $x. Three of the seven friends pay an extra $4 per month

for unlimited text messaging. Write and simplify an expression that represents the total cost of the seven plans.
Mathematics
1 answer:
Solnce55 [7]3 years ago
7 0
So 7 friends with similar. Phone plans. 3 of them pays an extra 4 bucks, so that means that x+ 4 is what 3 of the 7 r paying. The other 4 pay just x Amt of money for their plan. So go find the total bill, it would be (x+4)+(x+4)+(x+4)+x+x+x+x. Now simplify, (x+4)^3, because there are three of the 7 using that, and then x^4, because 4 of the 7 r using that plan. So in total it would be (x+4)^3+ x^4. Hope this helps
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Answer:

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Type I error:

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Type II error:

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Thus, type I error for the given hypothesis is concluding that mean mileage is less than 32 miles per hour when actually it is greater than or equal to 32 miles per gallon.

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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7 0
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