Given :
Service cost , c = $40.
Amount paid for each message , m = $0.02 .
To Find :
Equation represents the total cost C in dollars for a month when eric send t text message.
Solution :
Let , total cost be C .
It is an linear equation with slope equal to 0.02 and y-intercept equal to 40.
So ,

Hence, this is the required solution.
Answer:
Step-by-step explanation:
Finding an equation of a tangent line to that function requires that we find the derivative of the function at that point. Since this is an absolute value function with its cusp at (2, 5), the function is not differentiable here.
Sara needs to collect 1200 signatures.
Step-by-step explanation:
Let,
x be the total number of signatures she needs to collect
Given percentage = 36%
Signature collected = 432
According of statement;
36% of x = 432


Sara needs to collect 1200 signatures.
Keywords: Percentage, Division
Learn more about percentages at:
#LearnwithBrainly