Simplify 3/4-4x+1/2x-1/2+1/2x
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Using linear function concepts, it is found that he can correctly determine the hourly rate as follows:
subtract the supply fee, 15 dollars from the total cost, then, divide the difference by the number of hours.
<h3>What is a linear function?</h3>A linear function is modeled by:
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, which can also be interpreted as the initial value of a function that is valid only for
, such as is the case in this problem.
The flat fee is of $15, hence b = 15, then:
Philip uses the service for 3.5 hours for his spring cleaning, and his total is $232, hence when x = 3.5, y = 232, so we use it to find the hourly rate m.
Hence, the correct option is:
subtract the supply fee, 15 dollars from the total cost, then, divide the difference by the number of hours.
You can learn more about linear function concepts at brainly.com/question/24808124
ANSWER
EXPLANATION
We want to simplify the expression,
Let us expand the bracket to obtain,
We now group the complex number parts and real number parts.
We simplify further to obtain,
This is in the form,
where
and
EXPLANATION
We want to simplify the expression,
Let us expand the bracket to obtain,
We now group the complex number parts and real number parts.
We simplify further to obtain,
This is in the form,
where
and