As detailed as possible please! 3. A company pays its employees using a basic unit of X per month and a salary scale in which Senior Management receive Xper month; Trainee managers are paid X and all other workers earn a fixed amount of 1000 per month. If the company employs 50 Senior Managers, 8 Trainee Managers and 7 others, which of the polynomials describes its monthly salary costs? OA. X2 + x +7 OB. X + x + 7000 OC. 50X? +8X + 7000. OD. 50X2 + x + 7 OE. 50X+8X - 7000 4. The same company decides to appoint a single Senior Executive Vice-President who will be given X per month, and at the same time it reduces its (non-managerial) workforce to 3 people who now receive 1200 per month. Which of the polynomials below describes its annual salary costs? DA. X3 + 50X2 +8X + 3600 OB. 12X3 + 50X2 +96X + 43200 OC. 12X* +600X2 +96X + 43200 OD. X3 + 600X2 + 8X + 3600 DE. 12X3 + 600X? +96X +84000 5. The organisers of a "Talent Contest" wish to encourage more so-called "Novelty acts" to participate. In order to do so the judges' score, 8, out of 10 will be converted to an actual score A8, t) using the formula: A(s, t) = 3st + 2st + st + 1 In this t is a "weighting factor which is set according to the rules: t = 0.5 for singers, dance acts and comedians. t = 0.75 for animal performances. t=1 for conjurors and illusionists. t = 2 for any act that does not fit into these three categories The score is rounded up to the nearest integer if A(s, t) is not a whole number. A performing dog act receives a score of 7 out of 10 while a juggler is awarded 3 out of 10. Which of the following is true? DA. The dog act scores 10 points more than the juggler. OB. The dog act scores 50 points more than the juggler. OC. The dog act and juggler have exactly the same score. OD. The juggler scores 25 points more than the dog act. DE. The juggler scores 80 points more than the dog act