GIVING FREE 50 POINTS AND BRAINLIST TO WHO EVER CAN ANSWER CORRECTLY TO PART A & B

2,600 divided by 80 = 32.5

step-by-step explanation:

20

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)

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value