i need help understanding these questions

2. 1 17 Question 1 Indicate whether the grouch specifies a function. 5 -LO 5 -S - LD use the o hergraych of a junction I to determine for y too F 6 the nearest miteger, as machiated. some problems may have more than AY= F(X ) one answers. S -5 39 2 -7 1= 7(-5) question 3 3 -70= 7(*) Find the oppression 18 7 (x ) = 2 x - 3 amd g( x ) = * 2 + 24 . Question 4 9(-8)