Exam 2: Review and Applications of Algebra

For the month of February 2009, Twitter.com reported that its number of unique visitors had grown by 1382% from the 475,000 visitors in February of 2008. Rounded to the nearest 1000, how many unique visitors did Twitter.com have in February 2009?

Simplify:

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

Use the formula FV = PV(1 + i₁)(1 + i₂)(1 + i₃) to determine i₁ if PV = $1000, FV = $1094.83, i₂ = 0.03, i₃ = 0.035.

Simplify:

Perform the operation indicated and collect like terms:

Evaluate accurate to the cent: for P = $2500, i = 0.1025, n = 2, S = $1500, r = 0.09, and .

Simplify, collect like terms and maintain 5-figure accuracy:

Evaluate the following expression for the given value of the variable: 7x(4y - 8) for x = 3.2, y = 1.5

Evaluate the following expression for the given value of the variables and calculate to the cent: for R = $630, i = 0.115, n = 2

Use formula (5-3) to obtain X if NI = -$542.50, CM = $13.50, and FC = $18,970.

Use formula (10-2) to obtain PMT if PV = $6595.20, n = 20, and i = 0.06.

Evaluate the following expression for the given value of the variables and calculate to the cent: for R = $910, i = 0.1038129, n = 4

Simplify and combine the like terms:

Evaluate the following expression for the given value of the variable sand calculate to the cent: for L = $490,

Perform the operation indicated and collect like terms:

Solve the following equation: (x - 2) = 4

Solve the following pair of equations to three-figure accuracy. Verify your solution. 2v + 6w = 1 -9w + 10v = 18

Calculate the missing value: Initial Value = 0.11; Final Value = 0.13; Percent Change =? Calculate the answer accurate to the nearest 0.01%.

What amount after a reduction of. equals $549? Calculate the answer accurate to cent