answer sheet provided. Avold el asures. (30 poin(S) *ALGEBRA Which of the following diagram represents a relation that is NOT a function? Domain Range 1. 2. 3. 8. A. 5. B. 2 3 Domain 4. What is the value of (N.p)(x)? A) 250x5x² for 0 ≤ x ≤ 20 B) 250x + 5x² for 0 ≤ x ≤ 20 2 3 4 A) C (t) = (10) (0.15) mg/L of water B) C (t) = (25) (0.15) mg/L of water For numbers 4-5, refer to the given situation below. 4 -5 6 Solve for x: A) x = Range For what values of x can we not evaluate the functon f(x) = *-? A) (x:x ER, x = +2} B) (x:x ER, x = -2} A) f(L) = 5 6 7 X Contaminated water is subjected to a cleaning process. The concentration of pollutants is initially 25 mg per liter of water. If the cleaning process can reduce the pollutant by 15% each hour, which of the following functions below represents the concentration of pollutants in the water in terms of the number of hours that the cleaning process has taken place? 3 2x What is (N p)(x) represents? A) (N p)(x) represents the revenue earned by the company. B) (N p) (x) represents the starting capital of the company. C. 1 5 D. Range Domain 00 2 6 3 Domain Suppose that N(x) = x denotes the number of shirts sold by a shop, and the selling price per shirt is given by p(x) = 250-5x, for 0 ≤ x ≤ 20. C) (N p)(x) represents the loss money of the company. D) (N p) (x) represents the major share of the investors in the company. B) x = 2 3 6. An object is to travel a distance of 15 meters. Express the velocity v as a function of travel time t, in seconds. A) v(t) = 15t B) v(t) = 15 t C) v(t) == 7 C) C (t) = (25) (0.85) mg/L of water D) C (t) = (10) (0.85) mg/L of water D) v(t) = 15-t 7. In an organ pipe, the frequency f of vibration of air is inversely proportional to the length L of the pipe. Suppose that the frequency of vibration in a 10-foot pipe is 50 vibrations per second. Express f as a function of L. 50 L B) f(L) = ¹0 C) f (L) Range C) (x:x E R,x # ±2} C) 250x5x 2 for 0≤x≤ 20 D) 250x25x 3 for 0≤x≤ 20 C) x = 25 500 L D) {x: x E R,x # +4} L D) f(L) = 50 D) x = 25.5​