Bill makes leather belts to solve online each belt requires 1.2 yards of leather at the craft store leather is sold by foot if bill wants to make 76 belts how many feet of leather must he buy.

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Anyone know? will mark brainliest if correct

Find the domain and range of the following function f(x) = 51x - 21+ 4