Graph the step function.Assume it costs 25 cents to mail a letter weighing one ounce or less, and then 20 cents for each additional ounce or fraction of an ounce. Let L(x) be the cost of mailing a letter weighing x ounces. Graph y = L(x). Use the interval (0, 4].
A.
B.
C. 
D. 
Answer: B
Mathematics
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Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 2x + y - 11z = 1 B. 2x + y - 11z = -8 C. -8x - 6y - z = -11 D. -8x - 6y - z = -16
Mathematics
Graph the equation. Select integers for x, -3 ? x ? 3.y = 4x - 5
A. 
B. 
C. 
D. 
Mathematics
Construct the perpendicular from A to line 1.
Mathematics
Find the area of the figure using determinants.
A. 18.0 B. 19.0 C. 18.5 D. 17.25
Mathematics