What is the simplified expression for 7 power 4 multiplied by 7 power 6 over 7 power 8? 70
71
72
73

The simplified expression of   is 7² ⇒ C

Step-by-step explanation:

Let us revise some rules of exponent

Let us solve the question

∵ The expression is

→ By using the first rule above add the exponents of 7

∴   =

∴   =

→ By using the second rule above, subtract the exponents of 7

∵   =

∴   = 7²

∴ The simplified expression of   is 7²

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.

a

step-by-step explanation:

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