2. x = 1/4 ( 0.25)
4. y = 122, x = 42
6. x = 63, y = 8
8. is missing
10. 13.5 cm
12. x = 10.6
14. x = 5.45
Answer:
B.
General Formulas and Concepts:
- Order of Operations: BPEMDAS
- Equality Properties
Step-by-step explanation:
<u>Step 1: Define function</u>
f(x) = 8x + 4
<u>Step 2: Prep</u>
- Rewrite: y = 8x + 4
- Swap <em>x</em> and <em>y</em>: x = 8y + 4
<u>Step 3: Find Inverse (Solve for </u><em><u>y</u></em><u>)</u>
- Subtract 4 on both sides: x - 4 = 8y
- Divide both sides by 8: (x - 4)/8 = y
- Rewrite: y = (x - 4)/8
- Rewrite: f⁻¹(x) = (x - 4)/8
The slope of this equation is -4
The normal price is gotten by find the 5% discounted price and adding it to the amount paid.
The normal price is £580
<h3>Prices and Discounts</h3>
Given Data
Discount = 5%
Amount paid = £551
Let the normal price be x
let us find 5% of x
= 5/100 *x
=0.05x
Hence the discounted amount is £0.05x
We know that the amount paid = Normal Price - Discount
Substituting our data
551 = x-0.05x
551 = 0.95x
Divide both sides by 0.95
x = 551/0.95
x = £580
Learn more about discounts here:
brainly.com/question/7459025
