Write down the exact value of:
a) cos 90
b) sin 90
c) tan 0

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by p(c)= -15c(c-8) what current will produce the maximum power?

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative