## The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost

Question

The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of a CD player with a selling price of $110. f(x) = 5 + x;$111.05

f(x) = 1.05x; $115.50 f(x) = x – 5;$108.95

f(x) = 0.05x; $5.50 in progress 0 4 days 2021-07-19T17:01:41+00:00 1 Answers 1 views 0 ## Answers ( ) 1. Answer: The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of a CD player with a selling price of$110.

A. f(x) = 5 + x; $111.05 B. f(x) = 0.05x;$5.50

C. f(x) = x � 5; $108.95 D. f(x) =1.05x;$115.50

total cost = (price) + (5% of price)

f(x) = x + 0.05x

f(x) = 1.05x

So the function is f(x) = 1.05x

Plug in x = 110 to get

f(x) = 1.05x

f(110) = 1.05*110

f(110) = 115.50

The item costs $115.50 (after tax is added on) Step-by-step explanation: 1: the total cost of a CD player would be 104.76 2: Total Cost = (price) + (5% of price) f(x) = x + 0.05x f(x) = 1.05x So the function is f(x) = 1.05x Plug in x = 110 into the function f(110) = 1.05*110 f(110) = 115.50 The item costs$115.50

f(x) = .05x; $5.50 Step-by-step explanation: f(x) = .05x f(110) = .05(110) =$5.50