Which of these relations are​ functions? a
(4,4), (5,4),​ (6,4), (7,4),​ (8,4)
b
​(4,4), (5,6),​ (6,8), (6,10),​ (7,12)
c
​(7,33), (8,30),​ (9,27), (10,24),​ (11,21)
d
(6,9), (7,19),​ (8,29), (8,39),​ (9,49)

pls help me

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?