1. Find the amount that a worker who earns $250,000 a year will have in his retirement savings fund in 20 years. The contribution you make to your Afore is 7.5% of your salary and this grows at a rate of 8.75% per year. Consider that the first contribution is next year. A: $1,033,120.20

2. A property valued at $400,000 is estimated to depreciate as follows: $14,000 the first year, $13,500 the second, so on. Based on the above, find the value of the property in 12 years. A: $265,000.00

3. You are asked to find the first three terms of a geometric progression considering that the fifth term is 1 and the ratio is 0.5. A: T1=16, T2=8, T3=4, T4=2, T5=1

4.An eye doctor asks a person to wear their new contact lenses for an additional 10 minutes each day. Taking into consideration that you start wearing them for 2 hours on the first day, how many accumulated minutes will you have used them by the time you wear them 14 hours a day? A: 35,040 min

5. A father decides to form a savings fund that pays 2% monthly interest with the purpose of paying for the professional studies of his son, who is now 8 years old. He starts the fund with $100 and determines to deposit double what he has into the fund each birthday until he turns 18.

a)What amount should you deposit when your child turns 18? A: $880,069.17

b)How much will have been depositedWill your child turn 18? A: $1,474,642.94

6. How much will a liter of gasoline cost in December if in January it cost $18.57 and increases 15 cents per month? A: $20.22

7.How much will a liter of gasoline cost in December if in January it cost $18.57 and increases 4% per month? A: $28.59

8.The population of a city increases from 230,000 to 295,000 inhabitants in 5 years. What is the average annual percentage of growth? A: 6.42%

9.If it is determined by the Bank of Mexico that the peso is devalued 10 cents a day against the dollar and today the parity is $9,735 pesos per dollar, determine what the parity will be within 28 days (Consider today as it gives 0). A: $12,535