Which undefined geometric term is described as a two dimensional set of points that has no beginning or ends?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Pls never taught i’m really confused and i rlly need

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%