Which of the following is an irrational number?4/3 , ^24, ^81, -4.07

1 answer:

6 0

Well lets start by narrowing the answers.
You can't have a fraction as a irrational number so even though 4/3= 1 1/2 its still not an irrational number.
Negative 4.07 also can't be an irrational number because an irrational number is a number that never ends and even thought irrational numbers can be written as decimals -4.07 is not an irrational number.
I don't really want to give u the answer but I did limit ur choices so hope that helps!!!

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The value of a collector’s item is expected to increase exponentially each year. the item is purchased for $500. after 2 years,

sasho [114]

Answer:

$y=500(1.05)^x$

Step-by-step explanation:

The standard form for an exponential equation is

$y=a(b)^x$

We have 2 unknowns, a and b, but that's all good because we have 2 (x, y) coordinates we can utilize in order to find a and b. In our coordinate pair, x is the number of years gone by and y is the value after that number of years. The problem tells us that an item was purchased for $500. That translates to "before any time has gone by, the initial value of the item is $500". In other words, with x being time, no time has gone by, so x = 0. When x = 0, y = 500. (0, 500). Do the same for the next set of numbers. When x = 2 years gone by, the value is $551.25, so the coordinate is (2, 551.25). Now we use them to find a. Use the first coordinate:

$500=a(b)^0$