Answer:
a. Plan B; $4
b. 160 mins; Plan B
Step-by-step explanation:
a. Cost of Plan A for 80 minutes:
Find 80 on the x axis, and trave it up to to intercept the blue line (for Plan A). Check the y axis to see the value of y at this point. Thus:
f(80) = 8
This means Plan A will cost $8 for Rafael to 80 mins of long distance call per month.
Also, find the cost per month for 80 mins for Plan B. Use the same procedure as used in finding cost for plan A.
Plan B will cost $12.
Therefore, Plan B cost more.
Plan B cost $4 more than Plan A ($12 - $8 = $4)
b. Number of minutes that the two will cost the same is the number of minutes at the point where the two lines intercept = 160 minutes.
At 160 minutes, they both cost $16
The plan that will cost less if the time spent exceeds 160 minutes is Plan B.
Answer:
One minute and 25 seconds
Step-by-step explanation:
I cannot see the text. If you take another picture zoomed in I will answer it.
12x12=144+144-88=200 good luck!
Answer:
I think the answer is 2
Step-by-step explanation:
I it is perpendicular to y=2x-3 then the x value has to be -1 meaning that the x value has to be -2x
so we have Y=-2x+c
We know the Y value is -3 from the co ordinates (0,-3)
so now we have -3=-2x+c
we also know x=0 from the co-ordinates (0,-3)
so we now have -3=-2*0+c
-3=0+c
to make the equation work c has to be -3 meaning that we now have
-3=0-3 which is
Y=-2x-3
