I need help with the last three questions; thank you.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?