5 less than a number is 15

The number is 20

Step-by-step explanation:

Step 1:  Convert words into an expression

5 less than a number is 15

5 less than a number is n - 5

n - 5 = 15

Step 2:  Add 5 to both sides to get the number

n - 5 + 5 = 15 + 5

n = 20

 The number is 20

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.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4