Hey there!
3.8p = -7.2
DIVIDE 3.8 to BOTH SIDES
3.8p/3.8 = -7.2/3.8
CANCEL out: 3.8/3.8 because it give you 1
KEEP: -7.2/3.8 because it give you the p-value
NEW EQUATION: p = -7.2/3.8
SIMPLIFY IT!
p = -1.894737
Therefore, your answer is:
p = -1.894737
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)