Option 2
Martha estimated the quotient. Martha error was she should have rounded -8.02 to -8.
<u>SOLUTION:
</u>
Given that, Martha estimated the quotient of -71.81 and -8.02 using rounding to the nearest whole number.
And she committed an mistake. We have to find the error made by Martha while calculating quotient.
She treated -71.81 to be 72 and -8.02 to be 9. As both the number are negative there will be no problem when we get quotient.
When treated as above she got quotient as 8.
But in general, the quotient is not 8.
If we see options, we derive an conclusion.
<u>Option (1) </u>
she should have rounded 71.81 to 70, no this is not correct as 72 is nearest whole number.
<u>Option (2)</u>
she should have rounded 8.02 to 8, yes this is correct conclusion.
<u>Option (3)</u>
she should have divided 8 by 72, no this is not correct, we should divided 72 by 8.
<u>Option (4) </u>
she didn’t make an error, this is wrong as in 2nd option we caught an error.
Hence, second option is correct.
You did not include the questions, but I will give you two questions related with this same statement, and so you will learn how to work with it.
Also, you made a little (but important) typo.
The right equation for the annual income is: I = - 425x^2 + 45500 - 650000
1) Determine <span>the youngest age for which the average income of
a lawyer is $450,000
=> I = 450,000 = - 425x^2 + 45,500x - 650,000
=> 425x^2 - 45,000x + 650,000 + 450,000 = 0
=> 425x^2 - 45,000x + 1,100,000 = 0
You can use the quatratic equation to solve that equation:
x = [ 45,000 +/- √ { (45,000)^2 - 4(425)(1,100,000)} ] / (2*425)
x = 38.29 and x = 67.59
So, the youngest age is 38.29 years
2) Other question is what is the maximum average annual income a layer</span> can earn.
That means you have to find the maximum for the function - 425x^2 + 45500x - 650000
As you are in college you can use derivatives to find maxima or minima.
+> - 425*2 x + 45500 = 0
=> x = 45500 / 900 = 50.55
=> I = - 425 (50.55)^2 + 45500(50.55) - 650000 = 564,021. <--- maximum average annual income
D because multiplication is done before addition and subtraction
There is no asymptote
The Y-int is (0,-1)
Consider, pls, this explanation + solution:
according to the given equation the centre of this circle is in the poit (6;7) and its radius =4 units.
Using this data, it is possible to define right choice: D.
answer: graph D.
