The x’s must all be different. So if any x’s repeat it is not a function
Answer:
27
Step-by-step explanation:
(3 x 5) + (3 x 4)
15 + 12 = 27
Answer:
a. f(n)=3(to the power of n)+1
n is the number of days, day one being when the student sent it to 3 others
the plus one is the one student
Answer:
z ≥ 2
Step-by-step explanation:
Step 1: Write inequality
-7z - (-5z - 4) ≤ -3z - 2 + 4z
Step 2: Solve for <em>z</em>
- Distribute negative: -7z + 5z + 4 ≤ -3z - 2 + 4z
- Combine like terms: -2z + 4 ≤ z - 2
- Add 2z to both sides: 4 ≤ 3z - 2
- Add 2 to both sides: 6 ≤ 3z
- Divide both sides by 3: 2 ≤ z
- Rewrite: z ≥ 2
