Use the equation to solve the following problems f(x) = -3x + 20 1.) F(4)
2.) F(10)
3.) F(-2)
4.) F(9)
5.) F(-21)

side side side

side angle angle

angle side angle

side angle side

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)