If f(x)=2x+8, find f(5).

and

if f(x)=3x+4, find f(8)

Good day and hope that helps!

wow!

those are a lot of questions!

wow!

those are a lot of questions!

43

Step-by-step explanation:

f(x) = 2x + 4 and g(x) = 3x + 1,

find g(f(5))

f(5) = 2x+4  where x=5

     =2(5) +4

     = 10+4

     = 14

f(5) =14

The substitute x=14 into g(x)

g(x) = 3x+1

g(15) = 3(14) +1

          =42+1

            =43

43

Step-by-step explanation:

f(x) = 2x + 4 and g(x) = 3x + 1,

find g(f(5))

f(5) = 2x+4  where x=5

     =2(5) +4

     = 10+4

     = 14

f(5) =14

The substitute x=14 into g(x)

g(x) = 3x+1

g(15) = 3(14) +1

          =42+1

            =43

SI=(P*R*T)/100

P=2000

R=1.5

T=6

SI=(2000*1.5*6)/100

=(2000*9)/100

=180

Neil will earn interest of 180

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5