Get photo math it may work.
Answer:
The balance after 15 year is $831.25 .
Step-by-step explanation:
Formula
Where P is the principle and r is the rate of interest in the decimal form and t is the time.
As given
Caiden earned $475 from mowing lawns last summer.
He deposited this money in an account that pays an interest rate of 3.8% compounded annually.
Here
P = $475
3.8% is written in the decimal form.
= 0.038
r = 0.038
t = 15 years
Put in the formula
Amount = $831.25
Therefore the balance after 15 year is $831.25 .
Answer:
I think 2.21561971*10^(91) not sure
Step-by-step explanation:
1. The mistake is in the second line (didn't fully distribute)
2. The mistake is in the second line (didn't properly add 4p and 7p)
Perfect-square trinomials are of the form:

and are expressed in squared-binomial form as: 
The only possible choice for squared-binomial form is

Answer: correct choice is A.