sarahjadegonzal
sarahjadegonzal sarahjadegonzal
  • 16-01-2018
  • Mathematics
contestada

Jacob invested $300 in a savings account and earned $81 in interest at the end of 9 years. What was the interest rate?
A.
3%


B.
3.5%


C.
4%


D.
4.5%

Respuesta :

makaylaqueen02ozgo83
makaylaqueen02ozgo83 makaylaqueen02ozgo83
  • 16-01-2018
r = (1/t)(A/P - 1)r = (1/9)((300/81) - 1)Reduce the expression by cancelling the common factors.r=(1/9)(100/27−1)Combine 100/27 and −1 using a common denominator.r=(1/9)(100−1⋅27/27)Simplify the numerator.r=(1/9)(73/27)r = 0.30041152converting r decimal to a percentageR = 0.30041152 * 100 = 30.0412%/yearA. 3%
hope this helps
Answer Link

Otras preguntas

2m+5=5(m-7)-3m equals??
In my carpenter shop I make 3 legged stools and 4 legged chairs. I looked at my days output and counted 55 legs and 16 seats. How many stools and how many chai
What is a sentence using the idiom iron in the fire?
Karen batting average was 0.444 She was at bat 45 times.how many hits did she get?
What is the answer to 15 divided by 9375
A peregrine falcon can fly 322 kilometers per hour how many meters per hour can the falcon flyI know the answer is 322,000- but how do I write it out to explain
what direction would you travel to go from seoul to shanghai?
What are three examples of macroscopic structures?
Ryan bought grapes last week for $1.65 per pound. If he bought n pounds, write an equation to show how much money (m) he will spend.
Find four consecutive odd integers whose sum is 56