Answer:
Let's define T(x) as the cost with the company Teen-Mobile, where x is the number of gigabytes used.
We have a constant fee of $15 plus extra $10 for each gigabyte used, then:
T(x) = $15 + $10*x
Let's define B(x), same as above, but for the company Bruh-rizon.
Here we have a constant of $30 plus $7 for each gigabyte used.
B(x) = $30 + $7*x
Where in each equation, the growth rate is the coefficient multiplicating the x (also called the slope) , and the other factor is the starting value (also called the y-intercept).
Now knowing the number of gigas that you use in a month, can decide which option is best for you.
We have the following equation:
x2 + y2 + 6y - 72 = 0
Rewriting we have:
x2 + y2 + 6y = 72
Complete squares we have:
x2 + y2 + 6y + (6/2) ^ 2 = 72 + (6/2) ^ 2
x2 + y2 + 6y + (3) ^ 2 = 72 + (3) ^ 2
x2 + y2 + 6y + 9 = 72 + 9
x2 + (y + 3) 2 = 81
So, the center is:
(0, -3)
The radio is:
r = 9
Answer:
(0, -3)
r = 9
Answer:
y=-2
Step-by-step explanation:
On the graph, It says where x is -15, y is -2.
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Make them into improper fractions
(5*5)+3
(2*3)+2
Final fractions
28/5+8/3
Find a common denominator
Multiply 28/5 by 3
84/15
Multiply 8/3 by 5
40/15
Add - 84+40=124
