Step-by-step explanation:
1a. ( 3, -4)
1b. ( 8, -2)
1c. ( 10, -10)
hope it helps!
7= 16 + 3x
7-16 = 3x
-9 = 3x
x = (-9)/(3)
x = -3
Since they are independent events to find the probability of both is P(A) * P(B)
P(A) = P(Heads) =

P(B) = P(Roll ≥ 4) =

Now multiply those fractions together

= P(Heads & ≥ 4)