WILL GIVE BRAINLIEST Which functions are one-to-one on the domain (−∞,∞)?

A: μ(x)=x^6+2x^2/x+1

B: ψ(x)=sinx

C: g(x)=x^3 − 5

D: h(x)=x^5+x−2/x^4 + 1

E: f(x)=x^2 + 1

F: φ(x)=arctanx

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Let f(x)=2x and g(x)=2x. graph the functions on the same coordinate plane. what are the solutions to the equation f(x)=g(x) ?me asap