Exam 2: Review and Applications of Algebra

Use formula (10-1) to obtain PMT if FV = $1508.54, n = 4, and i = 0.05.

Simplify and collect like terms:

Solve for x to five-figure accuracy:

Solve the following equation: 1.25y - 20.5 = 0.5y - 11.5

Simplify:

Susan is paid a 15% commission of her sales. If she earns a commission of $3800, what was the amount of her sales?

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

The retail price of Paradise Island cheddar cheese dropped from $10.98 to $9.98 when the package size was reduced from 700 g to 600 g. What was the percent change in the unit price? Calculate the answer accurate to the nearest 0.01%.

$754.30 is what percent less than $759.00? Calculate the answer accurate to the nearest 0.01%.

Solve the following equation accurate to the cent:

Evaluate the following expression for the given value of the variables and calculate to the cent: for P = $770, r = 0.13,

Solve the following pair of equations to three-figure accuracy. Verify your solution. 0.33e + 1.67f = 292 1.2e + 0.61f = 377

Dash Canada offers two long-distance telephone plans. Plan X costs 6.5 cents per minute for calls between 8 a.m. and 6 p.m. weekdays (business hours) and 4.5 cents per minute at other times. Plan Y costs 5.3 cents per minute any time. Above what percentage of business-hour usage will Plan Y be cheaper?

Solve the following pair of equations to three-figure accuracy. Verify your solution. 68.9n - 38.5m = 57 45.1n - 79.4m = -658

Solve for the unknown variable:

Evaluate the following expression for the given value of the variables and calculate to the cent: for R = $550, i = 0.085, n = 3

Use formula (4-1) to calculate L if N = $891 and d = 0.10.