You close a question with a question mark..right?
75p is the correct answer because 1 lemon is 15p
4 is the nearest integer
as a decimal this number would be 3.5, which would round up to 4.
Answer:
4/1. with an intercept of 5
The parts (a) to (c) can be completed using the equtaion y ⇔ Δ ∈ ∞, ㏒Δ ∀ x∈√a, a∈R.