# Algebra Problems

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A marketing group developing online ad space is offering two payment options:

Option 1: $210 set up fee plus $10/inch of the ad

Option 2: No set up fee but $25/inch of the ad.

Let x = inches of the proposed ad, for example, x = 2 for a column ad that is 2" long.

a) Write a mathematical model representing the total ad cost, C, in terms of x for the following:

Option 1: C=_________________

Option 2: C=_________________

b) How many inches of ad space would need to be purchased for option 1 to be less than option 2? Set up an inequality and show your work algebraically using the information in part a. Summarize your findings in a brief sentence.

Answer:

Show your work here:

4) Use the graph of y = x2 + 4x - 5 to answer the following:

a) Without solving the equation or factoring, determine the solution(s) to the equation, , using only the graph.

Answer:

Explain how you obtained your answer(s) by looking at the graph:

b) Does this function have a maximum or a minimum?

Answer:

Explain how you obtained your answer by looking at the graph:

c) What are the coordinates of the vertex in (x, y) form?

Answer:

d) What is the equation of the line of symmetry for this graph?

Answer:

© BrainMass Inc. brainmass.com September 24, 2018, 11:09 pm ad1c9bdddf - https://brainmass.com/math/basic-algebra/algebra-problems-308713#### Solution Preview

3.

a)

Option 1: C= 10x + 210

Option 2: C= 25x

b)

Answer: x > 14 inches. More than 14 inches should be purchased so that option 1 is cheaper than option ...

#### Solution Summary

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