Right now Seth's age is 4/5 the age of his brother Eric. Twenty-one years ago, Eric was twice as old as Seth. What are their age
1 answer:
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Step-by-step explanation: (I'm not gonna' do it <em>all</em> for you tho)
to convert from <u>percent to fraction</u>:
70% =
to convert from <u>fraction to percent</u>:
= 55%
to convert from <u>fraction to decimal</u>:
to convert from <u>decimal to fraction</u>:
to convert from <u>percent to decimal</u>:
0.2% =
to convert from <u>decimal to percent</u>:
% = 40%
With that, you can solve the rest on your own
Answer:
6.84 ≤ x ≤ 37.39
Step-by-step explanation:
we have
-----> equation A
we know that
The company wants to keep its profits at or above $225,000,
so
-----> inequality B
Remember that P(x) is in thousands of dollars
Solve the system by graphing
using a graphing tool
The solution is the interval [6.78,39.22]
see the attached figure
therefore
A reasonable constraint for the model is
6.84 ≤ x ≤ 37.39
