Prove, by mathematical induction, that for every positive integer , 1 ∙ 2 ∙ 3 + 2 ∙ 3 ∙ 4 + ⋯ + ( + 1)( + 2) = ( + 1)( + 2)( + 3) 4

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

The function show two sisters' savings account and the rate at which they plan to deposit money

The westins and the shermans live in the same city and pay the same sales tax rate, and both families made $14,000 in taxable purchases last year. if the westins made $86,000 and the shermans made $33,000 last year, is the sales tax in their city an example of a regressive tax? yes, because the westins and the shermans both paid the same sales tax rate. b. no, because the shermans paid a higher percentage of their income in sales tax than the westins did. c. no, because the westins and the shermans both paid the same sales tax rate. d. yes, because the shermans paid a higher percentage of their income in sales tax than the westins did.