What are two ways to verify that your solutions are correct?
check all that apply.
a. try values for variables that don't match
b. graph the equations and see where they meet
c. substitute one variable's value for the other
d. substitute back into both equations

B. Graph the equations and see where they meet.

D. Substitute back into both equations.

Step-by-step explanation:

The two ways to verify that your solutions are correct are:

B. Graph the equations and see where they meet - Graphing is a very accurate and precise way to fetch solutions.

D. Substitute back into both equations - we can do this to cross check our solutions. This way makes sure that the solution is correct.

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)