Solve the quadratic equation 2x2 - x = 15 using the quadratic formula. A) X=-3,x= 5/2
B) x=-3, x= -5/2
C)x= -5/2,x= 3
D) x=5/2,= 3

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

What is the period of the sinusoidal function ?