Javier has a job installing windows. He earns a rate of $75 per day plus $8 per window installed. He also receives a stipend of $25 for snacks. Javier knows his weekly earnings can be shown with the following expression:
75d + 8w + 25

Identify a coefficient, a variable, and a constant in this expression.

If Javier works for 5 days and installs 48 windows, how much does he earn?

If Javier gets an increase in his stipend and receives $40 for snacks, would the coefficient, variable, or constant in the equation change? Why?

Question

Javier has a job installing windows. He earns a rate of $75 per day plus $8 per window installed. He also receives a stipend of $25 for snacks. Javier knows his weekly earnings can be shown with the following expression:
75d + 8w + 25

 Identify a coefficient, a variable, and a constant in this expression.

If Javier works for 5 days and installs 48 windows, how much does he earn? 

If Javier gets an increase in his stipend and receives $40 for snacks, would the coefficient, variable, or constant in the equation change? Why?

anonymous · Answer

coefficient is just a number before the letter (variable)
variable is a letter that stands for an unknown number
constant is just a number with no letter (variable)

anonymous · Answer

so what is the coefficient ? what is the constant ? and what is the variable ?

anonymous · Answer

75d + 8w + 25.....works for 5 days and installs 48 windows
so we sub in 5 for d and 48 for w
75(5) + 8(48) + 25 = (do the math and you will have your answer)

anonymous · Answer

and for the lat part....he was receiving $25 for snacks.....and it changed to $40.....what is changing ? Is it a variable, constant, or coefficient ??

anonymous · Answer

typo....last part

anonymous · Answer

|dw:1431382309729:dw|

anonymous · Answer

lol