Alex invests £4000 for 7 years. His investment pays compound interest of x% per annum.
At the end of the 7 years Alex’s investment is worth £5263.73
Work out the value of x

Step-by-step explanation:

Use the equation

and fill it in using the info we were given:

Begin by dividing both sides by 4000 to get

and take the 7th root of both sides to "undo" that 7th power on the right. Doing that gives us

1.04 = 1 + r so

.04 = r and the interest rate is 4%

idk

step-by-step explanation:

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.