Respuesta :
The equation would be .34 + .21(x -1) = C where x is the number of ounces and C = the cost. Let x = 4 to answer the question.
.34 + .21(4-1) = C Do the work in the parentheses
.34 + .21(3) = C multiply
.34 + .63 = C Add
.97 = C
The cost to mail the letter is $0.97.
.34 + .21(4-1) = C Do the work in the parentheses
.34 + .21(3) = C multiply
.34 + .63 = C Add
.97 = C
The cost to mail the letter is $0.97.
Answer: D. F(x)= 0.34 + 0.21 (x-1) ; $0.97
Step-by-step explanation:
Let x = the weight of the letter in ounces .
F(x) = 0.34 + 0.21 (x -1)
F(4)= 0.34 + 0.21 (4-1)
F(4)= 0.97
