Select the correct functions. Identify the functions that exhibit a removable discontinuity.

x2 + 4x -21

f(x) =

x2 - 13x+42

x2 - 8x +15

i(x) =

X-5

g(x)=

2x2 -5x + 12

2x+3

(x) =

x + 4

-2x +8

X-3

h(x) =

2x2 + x - 15

k(x) =

2x-5

Construct the graph that models the given situation

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

What are the triple angle formulas? is it related to double angle identities?