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Tyler works in retail where she earns $10.50 per hour. She also earns $15 for every new credit account she gets customers to open and she gets a weekly stipend of $50 for clothing. Tyler knows her weekly earnings can be shown with the following expression:

10.50h + 15c + 50

Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points)
Part B: If Tyler works for 37 hours and opens 12 new credit accounts, how much does she earn? Show your work to receive full credit.
Part C: If Tyler gets a raise and begins earning $11.25 per hour, would the coefficient, variable, or constant in the expression change? Why?

Respuesta :

mrkratzmannwr
You know that Tyler paid $10.50 per hour , so in total she works 37 hours a week

so 12 new accounts = 1= $15.00 12 * $15.00 =$180

for 37hours * 10.50 = $388.50 + $180=$568.50 + $50.00 = $618.50
pingwin09
a) The coefficients are 10.25 and 15 because they represent as real numbers paired with variables. The variables are c and h which represent as letters. The constant is 50 which is a fixed number.

b) With h = 37, c = 12: (10.25*37) + (15*12) + 50 = 388.50 + 180 + 50 = $618.50

c) Only the coefficient would change from $10.25 per hour to $11.25 per hour.

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