Cameron puts $500 into abank
account. If he leaves the
money untouched with a simple
interest rate of 5% for 18
years how much money is in his
account?

Solution:

Given that,

Principal = $ 500

Rate of interest = 5 %

Number of years = 18

The simple interest is given as:

Where,

p is the principal

n is the number of years

r is the rate of interest

Therefore,

How much money is in his  account?

Amount = principal + simple interest

Amount = 500 + 450

Amount = 950

Thus $ 950 is in account after 18 years

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft