Help please brainliest and 63 points! And please answer correctly :)

Determine the horizontal asymptote for the rational function.
y = 5
y = −5
y = 1
y = −1

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122