Darren invests $750 in an account that pays 2.5% simple interest for 40 weeks. How much will his investment be worth at the end of this time?

  $764.42

Step-by-step explanation:

The account balance is given by the formula ...

  A = P(1 +rt)

where P is the principal invested, r is the annual rate, and t is the number of years. Here, we assume 52 weeks in the year, since the time period is given in weeks.

Filling in the numbers, we have ...

  A = $750(1 +0.025(40/52)) = $764.42

Darren's investment will be worth $764.42 at the end of 40 weeks.

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.