Answer:
A
Step-by-step explanation:
note that (f - g)(x) = f(x) - g(x)
f(x) - g(x)
= 3x - 2 - (2x + 1) ← distribute by - 1
= 3x - 2 - 2x - 1 ← collect like terms
= x - 3 → A
Answer:

Step-by-step explanation:
the quadratic formula is:

a= -2, b = -1 and c =-3
Putting values in the formula

So, 
Answer:
45°
Step-by-step explanation:
The angles of any triangle add up to 180 degrees
add the two known angles: 47+88=135
then subtract the sum from 180 to get answer: 180-135=45