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3 years ago

6

Kendra bought 235 donuts for $120. Her profit was $35 once she had sold 100 donuts. Which equation below represents Kendra’s pro

fit P(n), as a function of the number sold, n?
P(n)=0.85n-120
P(n)=-0.85n+120
P(n)=0.35n
P(n)=1.55n-120

1 answer:

marysya [2.9K]3 years ago

5 0

The last one
P(n) = 1.55n-120

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Answer: There are 863,040 possible ways

Step-by-step explanation: There are 32 members altogether in the club. So in order to elect a president from among all of them, if every one of them has a chance if being elected, there would be 32 possible chances for every single club member.

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A man is paid $1500 salary. He spends 20% of the salary for his kids education, 35% for food, 15% for miscellaneous and he saves

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<h3>G I V E N : </h3>

A man is paid $1500 salary. He spends 20% of the salary for his kids education, 35% for food, 15% for miscellaneous and he saves the rest. How much money does he save?

<h3>S O L U T I O N : </h3>

Total Income = $ 1500

According to the question,

He spends 20% to his kids education

He spends 35% for food

He spends 15% for miscellaneous

Out of total income he spends 20% on kids education

So, amount spent on kids education = 20% of $1500

Amount = 20/100 × $1500

Amount = $300

Hence, money spent on his kids education is $300

35% is spent on food

Money spent on food = 35% of $1500

Money spent = 35/100 × $1500

Money spent = $525

Hence, money spent on food is $525

15% is spent on miscellaneous

Money spent on miscellaneous = 15% of $1500

Money spent = 15/100 × $1500

Money spent = $225

Hence, money spent on miscellaneous is $225

Now, adding all the three we get

$300 + $525 + $225

$825 + $225

$1050

Total money spent = $1050

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3 years ago

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A light private plane can fly 120 mph in still air. Flying against the wind, the plane can fly 320 miles in the same time it req

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Alright, lets get started.

A light private plane can fly 120 mph in still air.

Suppose the speed of wind = x mph

Against the wind, speed of plane will be = 120-x

With the wind, speed of plane will be = 120+x

Flying against the wind, the plane can fly 320 miles, so time taken will be

t = $\frac{320}{120-x}$

With the wind, the plane can fly 640 miles, so time taken will be

$t = \frac{640}{120+x}$

Both times are given same, so

$\frac{320}{120-x}= \frac{640}{120+x}$

Cross multiplying

$320(120+x) = 640(120-x)$

Dividing from 320

$120+x = 2(120-x)$

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So, the speed of the wind is 40 mph. : Answer

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An account with an initial balance of $4,000.00 and a 3% interest rate has a balance of $4,121.66 at the end of one year. What i

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The effective annual yield is 3.04%

What is effective annual yield?

Effective annual yield is the rate of return that considers the frequency of compounding, in other words, the number of times in a year that interest on the balance is compounded.

The easiest way to determine the effective annual yield in this case is to compare the end of the year balance with the initial balance at the start of the year

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Another way to determine the effective annual yield is use the below formula which considers that interest rate is 3% compounded monthly, in other words, n, the frequency of compounding is 12

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EAR=3.04%

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