Compound Interest
Total for $1,240 at 8% compounded annually for 2 years
What is $1,446.34?
$1,500 at 7% compounded annually for 3 years
What is $1,837.56?
James decided to start exercising. On the first day he did 2 pushups and on the next three days he did 5, 8, and 11 pushups respectively.
Write an expression for the number of pushups he did on the nth day, assuming that the number of pushups he does increases at the same rate.
un=3n-1
A woman deposits 100 EUR in her daughter's bank account on her first birthday. On every subsequent birthday, she deposits 10 EUR more than she deposited the previous year, so on her second birthday, she deposits 110 EUR, and on her third birthday she deposits 120 EUR.
By the time her daughter is 21 years old, how much money has been deposited in her account?
4200
What is the total ending balance for $1,030 at 4% compounded for 2 years
What is $1,114.04?
$7,300 at 7% compounded for 3 years
$8,942.81
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Find the 15th term of the geometric sequence 180, 90, 45,...
Give your answer correct to 3 significant figures.
0.0110
A student used a ruler to measure the length of an object as 6 cm.
He then used a 3D scanner and found that the true length is 6.016643.
Calculate the percentage error in the measurement.
Give your answer correct to three significant figures.
0.277%
What is the ending balance for $12,700 at 8.8% compounded annually for 1 year
$13,817.60
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$18,000 at 9% compounded for 6 years
$30,187.80
The height of a cellular antenna tower is measured to be 32.1m to the nearest tenth of a meter. What is the upper bound for the actual height of the tower?
32.15
The molar mass of gold is 1.97 x 102 g/mol.
How many moles are there in 5.83 x 105 g/mol of gold?
Note: give answer in scientific notation
2.96 x103
What is just the interest on a deposit of $28,600 at 7.9% compounded for 2 years
$4,697.29
$6480 is deposited into an account that earns 5.5% compound interest, compounded semi-annually for 5 years. Calculate the interest earned.
$2019.50
Fatima estimates that a rectangular field is 40m by 55m and uses those dimensions to approximate the area of the field. The field is known to have an area of 2050m2. Find the percentage error of Fatima’s approximation of the area of the field, giving your answer to the nearest tenth of a percent.
7.3
What is the nineteenth term of an arithmetic sequence with first term 9 and common difference 5?
99
What is the interest on a deposit of $130 at 9.4% compounded quarterly for 2 years
$25.58
What is the interest on $21,000 at 13.6% compounded for 4 years
$13,972.97
In an arithmetic sequence the sum of the first two terms is 34 and the sum of the first three terms is 63.
Find , the sum of the first eight terms.
School fees for a popular high school have been increasing by 9.5% per year. When Antoinette started the school, the annual fees were $6230.
By the time Antoinette leaves the school 8 years later, how much have her parents paid in school fees in total? Give your answer to the nearest $100.
70000