John works two jobs as a security guard he earns $9.75 per hour as a landscaper he earns $14 per hour one week john worked a tot
1 answer:
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Answer:
y = x + 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 4, 0) and (x₂, y₂ ) = (0, 1)
m = =
Note the line crosses the y- axis at (0, 1) ⇒ c = 1
y = x + 1 ← equation of line
Answer:
B. $0.50
Step-by-step explanation:
Assuming Printer C runs 60 hours (not 6) in Week 3, the equations for the number of cards per hour produced by each of the printers are ...
- 40a +50b +45c = 7950
- 45a +50b +40c = 7800
- 55a +30b +60c = 9600
The solutions to these equations can be found by various means. A graphing calculator (or any of several web sites) can solve the matrix equation to tell you the card production rates (in cards per hour) of each of the printers are ...
- a = 60
- b = 30
- c = 90
So the question about ink cost can be answered for printer B:
... ($15/hour)/(30 cards/hour) = (15/30) $/card = $0.50/card
