Simplify the expression (9 + 2i)(9 − 2i):
81 − 18i
81 + 18i
77
85

Evaluate cos2θ for cosθ = square root of 3/2

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9