Exam 2: Review and Applications of Algebra

Solve the following equation: 3.1t + 145 = 10 + 7.6t

Rearrange formula (13-1) to isolate i on the left side.

The commission on a transaction is 3% of the first $100,000 and 2% of the balance. What was the amount of a transaction where the commission charged was $10,100?

Evaluate the following expression for the given value of the variables and calculate to the cent: for 0.095, I = $23.21,

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

Formula (5-3) contains three two-letter symbols. Use it to calculate CM if NI = $15,000, X = 5000, and FC = $60,000.

Simplify and collect like terms:

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

Solve the following equation accurate to the cent:

Simplify:

In the first week of July a beer and wine store sold 871 cases of beer and paid refunds on 637 cases of empty bottles, for a net revenue of $12,632.10. For the following week the net revenue was $13,331.70 from the sale of 932 cases and the return of 805 cases of empties. What refund did the store pay per case of empty bottles?

Evaluate to six-figure accuracy:

Solve the following equation: 10a + 10 = 12 + 9a

$750 is what percent more than $250? Calculate the answer accurate to the nearest 0.01%.

Simplify the following:

Use formula (13-1) to calculate i if PMT = $900 and PV = $150,000. (There are several instances in our formulas where a two- or three-letter symbol is used for a variable. This is usually done to make the symbol more suggestive of the quantity it represents. For example, we use PMT to represent the amount of each payment in a series of regular payments. The symbol P has already been taken to represent another quantity that begins with "p.")

Simplify and collect like terms:

Evaluate to six-figure accuracy:

Simplify and collect like terms:

An investor purchased shares of Digger Resources at a price of $0.55 per share. One year later, the shares traded at $1.55, but they fell back to $0.75 by the end of the second year after the date of purchase. Calculate the percent change in the share price accurate to the nearest 0.01%.: a. In the first year b. In the second year c. Over both years