Apencil costs $0.50. write a variable expression for the cost of x pencils. a. 0.40 + x b. 0.50 c. 0.50 • x d. 0.50 - x

37

step-by-step explanation:

1/4 because there is 4 grades.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph