First of all, you need to simplify the expressions in order to know whether they are equal. Then, it all depends on the expression, after you simplify an expression, it will seem much easier to determine that. <span />
Flipping two coins gives four possibilities: HH, HT, TH, TT
So P(TT)=1/4
So we'd expect a quarter of the trials to be two tails.

trials expected to be two tails.
Answer:
x = - 0.2
Step-by-step explanation:
4x+4= -0.3x+3
4x + 0.3x +4= 3 Add 0.3x to both sides
4.3x + 4 = 3 Simplify
4.3x = 3 - 4 Subtract 4 from both sides
4.3x = -1 Simplify
4.3x = -1 Divide by 4.3 to isolate the variable
x = - 0.2