Exam 2: A: Review and Applications of Algebra

Calculate the missing value: Initial Value = $95; Final Value = $100; Percent Change =?

Graph following equations: 3x - 4y + 12 = 0 over the range x = -8 to x = 12

Use the graphical method to solve the following pair of equations.

Evaluate and calculate to the cent: for R = $550, i = 0.085, n = 3

Simplify:

It takes 20 minutes of machine time to manufacture Product X and 30 minutes of machine time to manufacture Product Y. If the machine operated 47 hours last week to produce a combined total of 120 units of the two products, how many units of Y were manufactured?

Simplify:

Evaluate to six-figure accuracy:

Perform operations and gather like terms:

Simplify:

Simplify:

Simplify:

Simplify:

Graph the following equations: y = 60x + 6,000 over the range x = 0 to x = 50

The Lightning laser printer prints 30% more pages per minute than the Reliable laser printer. What percentage less time than the Reliable will the Lightning require for long print jobs?

Classic Homes has found from experience that there should be 40% as many two-bedroom homes as three-bedroom homes in a subdivision, and twice as many two-bedroom homes as four-bedroom homes. How many homes of each type should Classic build in a new 96-home subdivision?

Simplify and collect like terms:

Simplify and collect like terms: 4(a² - 3a - 4) - 2(5a² - a - 6)

Simplify and collect like terms: 6a - 3a - 2(2b - a)

The Hampton District school board decided to reduce the number of students per teacher next year by 15%. If the number of students does not change, by what percentage must the number of teachers be increased?