could I please have some help w/these problems

Assume lim f(x) =7, lim g(x) =6, and lim h(x) =5. Compute the following limit and state the limit laws used to justify X-+7 X-+7 X-7 the computation. f(x) lim x-79(xx) - h(x)Find the following limit or state that it does not exist. 2 4x + 5x - 4 lim 4x - 6 X-+4 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. 2 4x + 5x - 4 O A. lim = 4x - 6 (Simplify your answer.) X-+4 O B. The limit does not exist.Find the following limit or state that it does not exist. - 6X lim X-4 14x - 12 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. - 6X O A. lim (Simplify your answer.) x-+4 14x - 12 O B. The limit does not exist.Find the following limit or state that it does not exist. 2 - 289 lim x-+17 17-X Select the correct choice below and, if necessary, fill in the answer box to complete your choice. 2 - 289 O A. lim 17 -x (Type an exact answer.) x-+17 O B. The limit does not exist