Which expression is equivalent to cos 150°?
our three choices are:
a. cos 30°
b. cos 330°
c. cos (-30°)
d. cos (-210°)

Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line