1. If a discount of 20% off the retail price of a desk saves Mark $45, how much did he pay for the desk?
A. $145
B. $160
C. $180
D. $210
E. $215
2. A customer pays $1,100 in state taxes on a newly purchased car. What is the value of the car if state taxes are 8.9% of the value?
A. $9.765.45
B. $10,876.90
C. $12,359.55
D. $14,345.48
E. $15,745.45
3. How many years does Steven need to invest his $3,000 at 7% to earn $210 in simple interest?
A. 1 year
B. 2 years
C. 3 years
D. 4 years
E. 5 years
4. Sabrina′s boss states that she will increase Sabrina′s salary from $12,000 to $14,000 per year if she enrolls in business courses at a local community college. What percent increase in salary will result from Sabrina taking the business courses?
A. 15%
B. 16.7%
C. 17.2%
D. 85%
E. 117%
参考答案：1. (C) 2. (C) 3. (A) 4. (B)