You can just substitute $62.10 to the model of the price
P = (20 + 0.5x) + 0.15 (20 + 0.5x)
68.10 = (20 +0.5x) + 0.15(20+0.5x)
x = 68 pages
therefore the maximum number of pages she can have in her
book is 68 pages
In hexadecimal/base-16, we have B₁₆ = 11, C₁₆ = 12, and D₁₆ = 13, so
4D₁₆ = 4 × 16¹ + 13 × 16⁰ = 77
and
BC2₁₆ = 11 × 16² + 12 × 16¹ + 2 × 16⁰ = 3010
Answer:
C
Step-by-step explanation:
Answer:
f⁻¹(x) = x - 3
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
- Functions
- Function Notation
- Inverse Functions
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
f(x) = x + 3
<u>Step 2: Find</u>
- Swap: x = y + 3
- [Subtraction Property of Equality] Isolate <em>y</em>: x - 3 = y
- Rewrite: f⁻¹(x) = x - 3
x = 6
given x varies inversely with y then
xy = k ← k is the constant of variation
to find k use the condition x = 4 when y = 9, hence
k = 4 × 9 = 36
x = 
← inverse variation equation
when y = 6, then x = 
= 6
