Answer:

Step-by-step explanation:

Distribute 4 through the parentheses

Collect like terms


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50 - 5n = 15
if you need to find the number n then
50 - 5n = 15
-5n = -35
n = 7
Answer:
f(-1) = 3
General Formulas and Concepts;
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 9(3)ˣ
x = -1
<u>Step 2: Solve</u>
- Substitute: f(-1) = 9(3)⁻¹
- Evaluate: f(-1) = 9(1/3)
- Multiply: f(-1) = 9/3
- Divide: f(-1) = 3
Answer: 4 1/2 - 1 11/12 = 2 1/3 but in decimal form 2.3