If (x + yi) + (2(x + yi) + 3i) = 9, what is x + yi?
a.
3 − i
b.
-3 + i
c.
-3 − i
d.
3 + i
e.
9 − 3i

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

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%

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