Answer:

Step-by-step explanation:
Given the formula for calculating the displacement of a body as shown below;

d = displacement
v = final velocity
a = acceleration
t = time
To make the acceleration a the subject of the formula, the followin steps must be taken;
Step 1: Subtract vt from both sides of the equation

Step 2: Divide both sides by t²


Answer:
-4,-3
Step-by-step explanation:
I think thats right! If not, let me know.
-3.8 is -3 8/10 which is -3 4/5 simplified
5 (2f+3)=2(5f-1)
10f+15=10f-2
10f-10f=-2-15
f=-17