he radius of a circular oil slick expands at a rate of 8 m/min. (a) How fast is the area of the oil slick increasing when the ra
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Given that Kimora’s cell phone company charges her $35 a month for phone service plus $.05 for each text message sent.
Kimora's cell phone bill for one month is $52.
We need to determine the number of text messages Kimora sent for one month.
Also, we need to write and equation and solve it.
<u>The equation:</u>
Let x denote the number of text messages Kimora sent for one month.
Thus, the equation is given by
Therefore, the equation for the number of text messages Kimora sent for one month is
<u>Solving the equation:</u>
We need to solve the equation
Subtracting both sides of the equation by 35, we get;
Dividing both sides of the equation by 0.05, we get;
Therefore, the number of messages sent is 340.
First we need slope
- C=(0,0)
- D(7,12)
Put D co-ordinates on y=mx+b
Now
slope intercept form.
- As b=0