over the last 2.5 years, the water level in a lake has changed by -0.3 ft per year. scientists predict that the water level will continue to go down for the next 5 years at a rate of 0.4 ft per year. based on this information, Andrew made several claims. determine whether each of the claims he makes is true or false (mark the answers that are true and false)​

a false b true c true d true c maybe false its a bit iffy for me

Step-by-step explanation:

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)