Katelyn wants to buy a new cell phone. She decides to buy an iPhone 8 for a price of $449.99. She joins a plan with T-Mobile that will cost $55.35 per month for unlimited. Which of the following functions models the cost per year over the lifetime of the phone, C(n), in terms of the number of years, n, that she owns the phone?
Question 4 options:

1. C(n) = 449.99 + 55.35n

2. C(n) = 449.99 + 664.20n

3. c(n)=449.99+55.35n

n

4. c(n)=449.99+664.20n

n

5050

hope this !

16.80 times .20= 3.36

step-by-step explanation:

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.