Multiple Choice. Read the following questions carefully and choose only the letter of the correct answer. 1. What is a rule that relates a set of values (domain) to a second set of values (range)? A. function B. equation C. relation D. rationalizing 2. Which of the following is a relation where each element in the domain is related to only one value in the range by some rule? A. function B. equation C. relation D. rationalizing 3. Which of the following relations is a FUNCTION? A. (1,2),(1,3),(2,4),(2,5) B. (3,5),(4,7),(5,9),(6,10) C. ( 2,2),( 2,3),( 2,4),( 2,5) − − − −  D. (2,0),(2,1),(2, 2),(2,3) 4. Which of the following is a function with more than one formula or equation? A. Linear Functions B. Quadratic Functions C. Quartic Functions D. Piecewise Functions 5. Which of the following functions is represented by the given problem below? A computer shop charges a tenant of only PhP 25 for the first 2 hours. The next hours is charged Php 10. A. 10 , if 0 < h 2 r(h)= 10 + 25(h - 2), if h > 2     B. 25 , if 0 < h 2      D. 25 , if 0 < h 2 r(h)= 25 + 10(h - 2), if h > 2     6. A chocolate bar is cost PhP 75. As the manufacturer marks its 25th Founding Anniversary they give discount for those who will buy more than 10 chocolate bars for only PhP 70. Write a piecewise function that represents this problem. A. 75 , if 0 < b 10 C(b)= 70 , if b > 10     B. 75b , if 0 < b 10 C(b)= 70b , if b > 10     C. 75b , if 0 < b 10 C(b)= 75b + 70b , if b > 10     D. 75b , if 0 < b 75 C(b)= 70b , if b > 75     7. What is the value of the function f x x ( ) 3 5 = − if x = 7? A. 10 B. 14 C. 16 D. 21 8. What is the value of the function 3 5 ( ) 2 4 x g x x − = + at x = 2? A. 3 2 B. 1 8 C. 5 4 − D. 3 2 ​