In a? symmetric, unimodal? distribution, about? two-thirds of the observations are? where?

Part of the total score for each program is the sum of five program component scores. on the free program, the sum of these five program component scores is multiplied by a factor of 2.0. yuzuru hanyu, of japan, earned scores of 9.07, 8.96, 8.89, 9.21, and 9.36 for the program components portion of his free program. how many total points did he receive for this portion?

Can someone pls ! pls answer all. no explanation needed..

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers