Question

Please help combining functions

Answer 1

domain is restricted by values that make function undefined
the sqrt is undefined for values less than zero

5-x >0 ---> x < 5

2x+5 > 0 --> x > -5/2

pick interval with values greater than -5/2 but less than 5

Answer 2

would it be d?

Answer 3

i mean b?

Answer 4

haha which one ... sometimes you can get the inequalities mixed up
always check by plugging in a number
if answer is d) , then x=0 will work
if answer is b) then x = 6 will work