4 Select all the correct expressions in the table.
Which expressions are equivalent to the given complex number?
45 + 2i
(2 + 8i) + 2(9 + 6i)(1 - i)
(13 + 4i) + 2(7 + 21) (2 – i)
(9 + 4i) + (36 – 2i)
(9 + 4i) + 2(4 + 71) (1 – 2i)
(2 + 8i) + (30 – 6i)
(13 + 4i) + (32 – 61)

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c