If everything in a store is 20% off, and the discounted price of an item is $18.00, what is the regular price?

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

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

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1