Given f(x) = 3x – 2, find f(-5).

f(-5)= -17

Step-by-step explanation:

We want to find at what value of f(x), or y, does x=-5

So, to find when x=-5, or f(-5), substitute -5 in for x

f(x)=3x-2

f(-5)=3(-5)-2

Multiply first (PEMDAS)

f(-5)=-15-2

Subtract

f(-5)= -17

Hope this helps! :)

f(-5) = -17

Step-by-step explanation:

f(x) = 3x – 2        Substitute -5 for x

f(-5) = 3(-5) - 2      Multiply

f(-5) = -15 - 2         Subtract

f(-5) = -17

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)