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3 years ago

Sam wants to buy a CD player that costs $241. He has $25 that his uncle sent him for his birthday. He just started

Mathematics

1 answer:

Debora [2.8K]3 years ago

7 0

Answer:

It will take Sam 18 weeks to save $241.

Step-by-step explanation:

The CD cost $241 then minus that by $25 and you get $216 than divide that by $12 because he gets that amount of money per week and then you get $18.

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James lives in San Francisco and works in Mountain View. In the morning, he has 3 transportation options (bus, cab, or train) to

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4 years ago

Find the annual percent increase or decrease that y = 0.35(2.3)x models. (1 point) A.230% increase B.130% increase C.30% decreas

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Answer: B. 130% increase

Step-by-step explanation:

Given function : $y=0.35(2.3)^x$

If x represents the number of years, we have to determine the two values of y in consecutive terms to determine if the value of y increases or decreases after a year.

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$y=A(1+r)^x$ , where A=0.35 and (1+r)=2.3, [A= initial amount , r=annual percent increase]

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Hence, the annual percent increase is 130%.

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3 years ago

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The function C(x) = x 2 + 78 x + 29 models the cost, in hundreds of dollars, to produce x thousand pens. Find and interpret C(0)

VashaNatasha [74]

Answer:

Step-by-step explanation:

Given the function C(x) = x 2 + 78 x + 29 models the cost, in hundreds of dollars, to produce x thousand pens, we are to interpret C(0), C(2) and C(4).

For C(0), we are to substitute x = 0 into the given function;

C(0) = 0²+78(0)+29

C(0) = 0+0+29

C(0) = 29

Since the cost C(x) is in hundreds of dollars, C(0) = 2900

C(0) means that the cost of producing 0 thousand pen is $2,900

For C(2), we are to substitute x = 2 into the given function;

C(2) = 2²+78(2)+29

C(2) = 4+156+29

C(2) = 189

Since the cost C(x) is in hundreds of dollars, C(2) = 189*100 = $18900

C(2) means that the cost of producing 2 thousand pens is $18,900

For C(4), we are to substitute x = 4 into the given function;

C(4) = 4²+78(4)+29

C(4) = 16+312+29

C(4) = 357

Since the cost C(4) is in hundreds of dollars, C(4) = 357

C(4) means that the cost of producing 4 thousand pens is $35,700

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