Answer:
Rate of change = -12
Step-by-step explanation:
y − 3 = −12(x + 4)
Expanding, we have;
y - 3 = -12x - 48
y = -12x - 48 + 3
y = -12x - 45
Now, formula for rate of change is;
Rate of change = (y(x + h) - y)/h
y(x + h) is; y = -12(x + h) - 45
This gives;
Rate of change = (-12(x + h) - 45 + 12x + 45)/h
Rate of change = (-12x - 12h - 45 + 12x + 45)/h
Rate of change = -12h/h
Rate of change = -12
Step by step explanation
<u>let x be the number of minutes and y be the total charges per month</u>
<em>A. Melissa's cell phone plan charges two cents a minute plus a $10 monthly fee. </em>
<em>y=0.02x+10</em>
<em> </em>
<em>B. Sandra's cell phone plan charges seven cents a minute. </em>
<em>y=0.07x</em>
<em />
<em>C. Holly's cell phone plan charges five cents per minute. She also receives a $5 discount each month.</em>
<em>y=0.05x-5</em>
<em />
<em> D. Alicia's cell phone plan charges six cents per minute plus a $5 monthly fee.</em>
<em>y=0.06x+5</em>
Answer:
Heyo
Step-by-step explanation:
You on??