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lys-0071 [83]
3 years ago
14

he price of apples went from $0.30 per lb to $0.90 per lb in three years. Find the rate of change of the price of apples. A) $0.

10 per pound per year B) $0.20 per pound per year C) $0.30 per pound per year Eliminate D) $0.40 per pound per year
Mathematics
2 answers:
Temka [501]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

To find the rate of change, find the total change in price and then divide it by number of years over which it changed. So the answer is  

$0.60/3

<u>which is $0.20 per pound per year.</u>

Tatiana [17]3 years ago
3 0
To find the rate<span> of change, find the total change in price and then divide it by number of years over which it changed. So the answer is </span><span>$0.603</span><span> which is </span><span>$0.20 per pound per year</span><span>.</span>
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A raft and a motorboat simultaneously leave from the same point and move down the river. After 2 hours the motorboat turns aroun
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Answer:

2 hours

Step-by-step explanation:

Let x mph be the speed of motorboat in still water and y mph be the speed of current.

A raft and a motorboat simultaneously leave from the same point and move down the river, then speeds down the river are:

        motorboat =  x + y mph

        raft = y mph

In two hours they will cover:

        motorboat = 2(x+y) miles

        raft = 2y miles

After 2 hours the motorboat turns around and starts moving towards the raft (against the current), so its speed is now x - y mph.

Let t be the time they move towards each other. In t hours, they cover

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        raft = ty miles

The distance from the starting point to the turning point is the same as the sum of the distances the raft covers and the motorboat covers after turning around, so

2(x+y)=2y+t(x-y)+ty \\ \\2x+2y=2y+tx-ty+ty\\ \\2x=tx\\ \\t=2\ hours

6 0
3 years ago
So if I buy something for $26.98 and buy something else for $6.10 what will be the Total.​
Ratling [72]

Answer:

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Ving Advanced Linear Equations: Practice
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Answer:

In the first week, Micah bought 11 gallons of gas.

In the second week, Micah bought 8 gallons of gas.

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Given:

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x gallons = $2.39x

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x - 3 gallons = $2.49(x-3)

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$2.39x + $2.49(x-3) = $46.21

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Add 7.47 to both sides

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Divide both sides by 4.88

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Second week

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In the first week, Micah bought 11 gallons of gas.

In the second week, Micah bought 8 gallons of gas.

3 0
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