What is the value of F(x) = 4x+9
When x= 5

f(5) = 29

Step-by-step explanation:

Step 1:  Identify the function

f(x) = 4x + 9

Step 2:  Let x equal 5 in the function

f(5) = 4(5) + 9

Step 3:  Multiply

f(5) = 20 + 9

Step 4:  Add

f(5) = 29

 29

Step-by-step explanation:

Given function:

                 

                   Find F(x) at ,

The value of 'x' is given for which we have to find the value of F(x)

Putting the given 'x' in the function equation

                     

             

        So , at  

Given:
Cash price = 1,998
143 per month for 15 months

a) total installment price:
143 x 15 = 2,145

b) the carrying charges
2,145 - 1998 = 147

c) number of months needed to save the money at the monthly rate.
1,998 / 143 = 13.97 or 14 months.