I need help on these 5 calculus questions:

Question 1 (1 point) A box with square base of length x and height y is changing shape such that % = 3cm/s, % = 7cm/s. Find the rate of change of volume when x = 20m, y = 4cm. Recall: the volume Vof a box with length 2,\\fQuestion 3 (1 point) Use L'Hospital's Rule to determine which of the following equal O (select all that apply): O 10x4 lim x-+ 00 ex O Sex lim O In(x 10) lim x-+ 00 3x lim x-+00 In(x)