Marco makes the rectangular sign shown to advertise the grand opening of his pizza restaurant. The sign is
surrounded by a wood frame that is x inches wide.
A. What does (20 + 2x)(30 + 2x) represent?
B. Write a polynomial for the total area of the sign and
the frame.
C. What is the total area of the sign and the frame if
the width of the frame is 2 inches?

Browning labs is testing a new growth inhibitor for a certain type of bacteria. the bacteria naturally grows exponentially each hour at a rate of 6.2%. the researchers know that the inhibitor will make the growth rate of the bacteria less than or equal to its natural growth rate. the sample currently contains 100 bacteria.the container holding the sample can hold only 300 bacteria, after which the sample will no longer grow. however, the researchers are increasing the size of the container at a constant rate allowing the container to hold 100 more bacteria each hour. they would like to determine the possible number of bacteria in the container over time.create a system of inequalities to model the situation above, and use it to determine how many of the solutions are viable.

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)