Select ALL the ratios that are equivalent to 16 : 6 a. 3 to 8

b. 32 : 12

c. 4 to 2

d. 8 to 3

Question 3 options:

a & b

b & c

b & d

a & c

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6