The variables X, Y, and Z all represent the percent that Skylar will be discounted. The parts of the equation that represent what Skylar will pay are (1-x), (1-y), and (1-z). Hope I helped :)
Answer:
y= -12x - 42
Step-by-step explanation:
slope intercept form is y=mx +b
y-6 = -12(x+4) simplify
y - 6 = -12x - 48 separate y by adding 6 to both sides of the equation
y = -12x - 42
Answer:
50 nickels, 20 quarters.
Step-by-step explanation:
System of equations (q = # of quarters, n = # of nickels):
<em>q + n = 70, 0.25q + 0.05n = 7.50</em>
the first equation can be changed to q = 70 - n, so we are able to <em>substitute q with 70 - n</em>.
So, it will look like <em>0.25*70 - 0.25n + 0.05n = 7.50</em>. This can be simplified to <em>0.2n = 10</em>, which means that n = 50.
Knowing that we can solve <em>q + 50 = 70</em>, which means that q = 20.
