Tolong ya, jawab yang baik dan jelas.

33) 37,50,65,82,101 ... dst
37) a = 9
b = 7
U10 = ..?

U10 = a + (n-1) b
U10 = 9 + (10-1) 7
U10 = 9 + (9) 7
U10 = 9 + 63
U10 = 72

38) 121
39) 10
42) 8
45) U10 = 52
b = 5
a = ...?

U10 = a + (n-1) b
52 = a + (9) 5
52 = a + 45
a = 52 - 45
a = 7