110 ft below sea level positive or negative

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?

Which expression is equal to (f+g)(x)?

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)