Answer:
q=
−4t+7u over 8r
Step-by-step explanation:
8qr+4t=7u
Step 1: Add -4t to both sides.
8qr+4t+−4t=7u+−4t
8qr=−4t+7u
Step 2: Divide both sides by 8r.
8qr
8r
=
−4t+7u
8r
q=
−4t+7u
8r
Answer:
q=
−4t+7u
8r
We'll have to assume that interest is charged annually.
interest = i = p*r*t, where p is the initial amount ($25000), r is the annual interest rate as a decimal fraction, and t is the length of time, in years.
Then $2625 = $25000*0.035*t. Solve for t:
$2625
------------ = 0.035t = 0.105. Dividing both sides by 0.035, we get
$25000
t = 3 years (answer)