Exam 2: Review and Applications of Algebra

Evaluate to six-figure accuracy:

$100 is what percent more than $90? Calculate the answer accurate to the nearest 0.01%.

Evaluate the following expression for the given value of the variables: I ÷ Pr for P = $500, I = $13.75, r = 0.11

Evaluate to six-figure accuracy:

Solve the following pair of equations. Verify your solution. 7x - y = 35 y = 2x

Use formula (4-2) to calculate d₂ if N = $70.29, L = $99.99, d₁ = 0.20, and d₃ = 0.05.

Evaluate the following:

Evaluate the following expression for the given value of the variables and calculate to the cent: for P = $1280, i = 0.025, n = 3

Deanna is paid a base salary plus commission. On sales of $27,000 and $35,500 in two successive months, her gross pay was $2815.00 and $3197.50, respectively. What are her base salary and commission rate (in percent)?

Wilfredo can do a task 35% faster than Kunal. What percentage less time than Kunal does Wilfredo take to do a task?

Evaluate to six-figure accuracy:

Rearrange formula (4-2) to isolate d3 on the left side.

Evaluate to six-figure accuracy:

Simplify:

Solve for the unknown variable:

Use formula (6-2) to calculate P if r = 0.004, S = $3626, and t = 9.

Solve the following equation: 0.5(x - 3) = 20

Solve the following pair of equations. Verify your solution. g - h = 17

Solve the following equation accurate to the cent:

Simplify and collect like terms: