question 6 of 20\nmany credit card companies charge a compound interest rate of 1.8% per month on a credit…

question 6 of 20\nmany credit card companies charge a compound interest rate of 1.8% per month on a credit card balance. nelson owes $950 on a credit card. if he makes no purchases or payments, he will go deeper and deeper into debt.\nwhich of the following sequences describes his increasing monthly balance?\na. 950.00, 967.10, 984.20, 1001.30, 1018.40, ...\nb. 950.00, 950.18, 950.36, 950.54, 950.72, ...\nc. 950.00, 1121.00, 1322.78, 1560.88, 1841.84, ...\nd. 950.00, 1121.00, 1292.00, 1463.00, 1634.00, ...\ne. 950.00, 967.10, 984.51, 1002.23, 1020.27, ...
Answer
Explanation:
Step1: Recall compound - interest formula for next - month balance
The formula for the balance $B_{n}$ after $n$ months with an initial balance $B_0$ and a monthly interest rate $r$ is $B_{n}=B_{0}(1 + r)^n$. Here, $B_0 = 950$ and $r=0.018$. For the first - month balance ($n = 1$), $B_1=950\times(1 + 0.018)=950\times1.018 = 967.10$.
Step2: Calculate the second - month balance
For the second - month balance ($n = 2$), $B_2=950\times(1 + 0.018)^2=950\times1.018^2=950\times1.036324 = 984.5078\approx984.51$.
Step3: Calculate the third - month balance
For the third - month balance ($n = 3$), $B_3=950\times(1 + 0.018)^3=950\times1.018^3=950\times 1.055077832=1002.323948\approx1002.23$.
Step4: Calculate the fourth - month balance
For the fourth - month balance ($n = 4$), $B_4=950\times(1 + 0.018)^4=950\times1.018^4=950\times1.074079233=1020.375271\approx1020.27$.
Answer:
E. 950.00, 967.10, 984.51, 1002.23, 1020.27, ...