You should try doing this
9 times 100
then divide your answer by 12.
81 = 37.5% of x.
81 = (37.5/100)*x
81 = 0.375x
0.375x = 81
x = 81/0.375
x = 216
The number is 216.
The correct answer are
Sue interest : 169.6061952
Bill interest: 189.9131472
B. Bill will get more interest then sue
Explain
Sue principal balance p= 2300
Interest for 3 years so t= 3
Interest is compounded yearly n= 1
R= 2.4%
A= 2300(1+2.4/100)^3 = 2300(1+0.024)^3 = 2300 x (1.024)^3 = 2469.6061952
Interest for 3 year is A-p= 2469.6061952 -2300
169.6061952
Bill principle p= 1800
Interest for 3 years t= 3
Interest compounded so n= 1
R= 3.4%
A= 1800(1+3.4/100)^3 = 1800 (1+0.034)^3 = 1800 (1.034)^3 = 1989.9131472
Interest in 3 yrs = 1989.9131472 - 1800 =
189.9131472
For B is below
Hopefully this help you :D
The slope of the line through (1,0) and (3,8) is 4
It only the last one.
Hope this helps :)