A motorboat is still install water travels at a rate of 45 miles per hour The current today is travelling at a rate of 10 miles per hour if it took an extra hour to travel upstream how far was the trip one way

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  157.5 miles

Step-by-step explanation:

We assume the "extra hour" is in relation to the travel time it would take if there were no current.

The relation between time, speed, and distance is ...

  time = distance/speed

Then the difference in travel times for the distance d is ...

  d/35 -d/45 =1

  9d -7d = 315 . . . . . multiply by 315 (the least common denominator)

  d = 315/2 = 157.5 . . . . divide by 2

The trip was 157.5 miles one way.

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answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.