t $179.40. The sales tax was found by multiplying the price of the keyboard by 0.06. What was the total cost of the keyboard with sales tax?

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Need on this one asap im almost done with this subject

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?