√z = 13 - 8
√z = 5
z = 5²
z = 25
In this case the z can be any number, however z cannot be less than 0 and that is the restriction. (for example; √-1 = irrational number, cannot be solved.)
Answer:
$561
Step-by-step explanation:
4100 x0,06= 246
246+315=561
Here we will use exponential form, which is

Initial value, y0 = 500
Double of 500 = 1000



Required equation is
