Two planes, which are 2480 miles apart, fly toward each other. Their speeds differ by 70mph. If they pass each other in 4 hours, what is the speed of each?

345;275

Step-by-step explanation:

Lest say v_1 the speed of the slowest plane

v_2 the speed of the fasterst plane

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