Jason earns $3.50 per hour plus a 2.5% commission on all goods sold. One of them worked 40 hours and sold $5,750 worth of goods. What were his weekly earnings?

Which expression is equivalent to √ -80?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?