The range is how much it spans in f(x), f(x) is a line, it has no max/min, so it's enough to substitute the least and greatest values of your domain:
f(-2) = -5, f(4)=7,
Range = [-5,7]
Solving equations simple
4n + 3 =11
Basically any two numbers whose product is 44^2 = 1936.
so 16×121 = 1936
so the pair is 16 and 121
An Equilateral triangle is a triangle in which all three sides are equal. It should be Yes, It is a Equilateral.
