1. The circumference of a circle is a function of its radius: C(r) = 2nr. Find C-(8) and
interpret its meaning in context.
2. For the function f(x) = 2x + c, find the value
of c such that f-1(21) = -5.​

(60 points) explain this in detail

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%

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?