Answer:
D
Step-by-step explanation:
Sub (0, -1) into 4 choices, Only A, C, D work.
Sub (-2, 9) into A, C, not work.
Sub (4, 51) into D for checking, it works
Step-by-step explanation:
Initially, there's only 1 letter.
Tania sends the letter to 4 friends.
Each friend sends a letter to 4 more friends (4 × 4 = 16).
Each of those friends sends to 4 more friends (16 × 4 = 64).
The pattern is 1, 4, 16, 64, etc.
This is a geometric sequence. The first term is 1 and each term is 4 times the previous term.
a₁ = 1
aₙ = 4 aₙ₋₁
The explicit formula is:
aₙ = 1 (4)ⁿ⁻¹
Answer:
-5
Step-by-step explanation:
4x - 1 = 6x + 9
4x = 6x + 10
-2x = 10
x = -5
Answer:
x-intercept(s): ( 4, 0)
y-intercept(s): ( 0, -14)