Lynne is driving at a constant rate of 48 miles per hour. how far will she drive in 4 hours?
a. 144 miles
b. 148 miles
c. 192 miles
d. 196 miles

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