]E = IR
If we move I to LHS, we get R in RHS.
Thus,
E/I = R
Thus,
The formula to determine yearly compound interest is

a- amount
p- Is the principal the principal is the amount borrowed
r- is the rate
t- is the time
We will input all the numbers from our question into the formula.

Our rounded calculation is <span>59245.15
Roy will have to pay </span>
59245.15
Answer:
90 cm²
Step-by-step explanation:
since the ratio is 1:6 for every one little box the bigger box increases 6 times.
so 15·6= 90 cm²
8:12 will be the ratio 8 for james and roy has 12