What is the recursive rule for this geometric sequence?

1/2,−2,8,−32,...

a1=−12;an=4⋅an−1

a1=12;an=2⋅an−1

a1=12;an=−4⋅an−1

a1=−4;an=12⋅an−1

Iwill give you ! what is the measure of ∠v ?

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?