When rounding to the nearest tenth, which of the numbers below will round to 78.5? Select all that apply.

A) 78.405
B) 79.4
C) 78.48
D) 78.51
E) 78.54

Step-by-step explanation:

The answer is because when rounding it should be b

step-by-step explanation:

my butt

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)