N N/X + 47. 3(x5) 5) -(x + 3) 48.-2(x7) 3(x +2) (5 2x)3x - 8) <7x + 2(5 - x) 51. 24 6x- 2(3x - 5) +2x 49. 4х 50. 3(х young adults with ents a 43% increase 1 + 2 2 52. ung adults with as- earnings of young 3 3 3 9 53. х + <\ und to the nearest 4 4 tatistics) x -5 54. 3 (2x + 6) twice the first sub- tegers is 16. Solve. utive odd integers the second by 54. 55. George Boros can pay his housekeeper $15 per weel his laundry, or he can have the laundromat do it at a 30 cents per pound for the first 10 pounds and 40 c each additional pound. Use an inequality to find the at which it is more economical to use the housekee the laundromat. day for a compact ver 100 miles driv- is $46.86, find how 56./In the Olympic gymnastics competition, Nana mus 65 to win the silver medal. Seven of ntific calculators is

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…