Beth swam laps to raise money for a charity. Beth raised $15 plus $0.65 per lap that she swam. She raised a total of $80.00. Let
2 answers:
Answer
Find out the how many laps did Beth swim and write expression the total number of laps Beth swam .
To proof
As given
Beth swam laps to raise money for a charity.
Beth raised $15 plus $0.65 per lap that she swam.
She raised a total of $80.00
Let x represent the number of laps Beth swam.
Than the expression becomes
15 + 0.65× x = 80 .00
Simplify
15 + 0.65x = 80
0.65x = 80 -15
0.65x = 65
x = 100
Therefore the number of laps did Beth swim be 100 .
Hence proved
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Given the two options above, in order to come up with the best plan we have to calculate the future value of money in each plan.
compound interest is given by:
Option 1
p=$500
r=2%=0.02
t=1 year
Option 2
p=$500
r=2/12=1/6
n=1*12=12
hence:
=$509.09
Comparing the two plans above, option 1 is the best.
b] Option 1 is the best because she will secure $510 as compared to option 2 which has interest rate that reduces her amount by $1 after one year due to annual charges. The total amount of money she will have at the end of the plan is $510.
compound interest is given by:
Option 1
p=$500
r=2%=0.02
t=1 year
Option 2
p=$500
r=2/12=1/6
n=1*12=12
hence:
=$509.09
Comparing the two plans above, option 1 is the best.
b] Option 1 is the best because she will secure $510 as compared to option 2 which has interest rate that reduces her amount by $1 after one year due to annual charges. The total amount of money she will have at the end of the plan is $510.