Can the range of a function be written like this {6,7,8,10} instead of like this ?

No unless x is being used to define only elements of an integer set.

Step-by-step explanation:

No, not in general unless x is defined as a integer or a subset of the integers like the naturals, whole numbers

Usually 6<=x<=10 means all real numbers between 6 and 10, inclusive. This means example that 6.6 or 2pi are in this set with infinitely other numbers that I can't name.

{6,7,8,9,10} just means the set containing the numbers 6,7,8,9,10 and that's only those 5 numbers.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

12.5 feet

step-by-step explanation: