What is the surface area of the cone ?

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

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

What is negative 3/9 times negative 2/8 ?