Pleas help asap. Which ordered pair in the form (x, y) is a solution of this equation? ( 7x-5y=1 )
A] (-3, -2)
B] (-2, -3)
C] (0, 4)
D] (4, 0)​

B] (-2, -3)

Step-by-step explanation:

The easiest way to solve this question is to try plugging in the ordered pairs into the equation. When we do this we find that B is the correct answer.

7(-2)-5(-3)=1

-14+15=1

1=1

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)