Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions, or no solution. 3x+4y=-17
2x+3y=-13
Please help ASAP I'm having a hard time doing this problem. I can either use substitution or elimination in this problem.

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out