In the figure, A-B-C. Explain why 
and 
must be supplementary.
What will be an ideal response?
is a straight angle. By definition, 
.But 
by the Angle-Addition Postulate.
Then 
by substitution.
By definition,
and
are supplementary.
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Graph the equation and state whether the line has a positive or negative slope.y - 4x = 4
A. Positive slope
B. Negative slope
C. Negative slope
D. Positive slope
Solve the problem.Linda needs to have her car towed. Little Town Auto charges a flat fee of $50 plus 
per mile towed. Write a function expressing Linda's towing cost, c, in terms of miles towed, x. Find the cost of having a car towed 5 miles.
A. c(x) = 3x; $15 B. c(x) = 3 + 50; $53 C. c(x) = 3x + 50; $65 D. c(x) = 3x + 50; $55
Tell whether or not the rational expressions are equivalent.
, 
A. No B. Yes
Identify p, b, and a. Do not solve for the unknown.What is 2% of 138?
A. p; 138; 2 B. 138; b; 2 C. 2; 138; a D. 2; b; 138