10y -30 = 20y +20 -10y

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14