What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405? hint: r ≠ 1, where a1 is the first term and r is the common ratio. hint: image attached options: a) sn = −1,220 b) sn = 605 c) sn = −15 d) sn = −605

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

What are the domain and range of the function f(x)=2^x+1

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m