Order of Operation 10) An electrician charges $45 per hour and spends $20 a day on gasoline. If he worked for seven hours, write an algebraic expression to represent his earnings for the day.

45(x)-20

x=hours

7 hours

x=7

45(7)-20 =295

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

step-by-step explanation:

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