Hiya! does anyone know the answer for A and B? I’m so confused. Thankyou!

a) when input is 8

8x5=40

Then, 40-3=37> Output

b)when input is 42

42 x 5 =210

210-3=207 > Output

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)

360/29

step-by-step explanation: