David is building a scale model of a railroad station near his house. His scale is 1 in. = 12 ft. The actual station is 540 ft long. What is the
length of the model of the railroad station?

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step-by-step explanatio89

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

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step-by-step explanation:

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get