Look at the given equation. Roy and Sam start solving the equation as follows. Which student's work is correct so far and what property did he use? A. Roy's work is correct so far. He used the subtraction property of equality. B. Roy's work is correct so far. He used the addition property of equality. C. Sam's work is correct so far. He used the addition property of equality. D. Sam's work is correct so far. He used the subtraction property of equality.

23

step-by-step explanation:

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

answer:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21  

-7 + ? = 21

-7 + 28 = 21

hope it

3

step-by-step explanation: