The price of a mug is $5.40. The sales tax on the mug is 50.38. What is the tax rate? %
1 answer:
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-
=
*
-
= 9(
) - 1(
) = 8(
)
-
=
⇒ 8() =
⇒ =
<em>multiplied both sides by 8</em>
⇒ =
⇒ = 3⁻²
⇒ x = -2
Answer: x = -2
We have that an inverse variation in a function is given by:
We must find the value of the constant k.
To do this, we substitute the values of x1 = 12, y1 = 15.
We have then:
Clearing k we have:
Substituting the value of k we have that the inverse variation is:
For y2 = 3 we have:
Clearing x2 we have:
Answer:
We must find the value of the constant k.
To do this, we substitute the values of x1 = 12, y1 = 15.
We have then:
Clearing k we have:
Substituting the value of k we have that the inverse variation is:
For y2 = 3 we have:
Clearing x2 we have:
Answer: