The circumference of a circle that has a radius of 7cm. use 3.14. for pie

Which of those sequences is a geometric sequence

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3