For the following geometric sequence find the explicit formula: {-1, 3, -9, ...}. an = -3 · an - 1 where a1 = -1 an = (-3) n - 1 an = -3 · an - 1 where a1 = 1 an = -1 · (-3) n - 1

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

52 cm radius = diameter = area = circumference = circumfer

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?