Hepl with polynomials (2/3y2 - 3/4) + (5/6y2 + 4)

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)