Match the equations of hyperbolas to the corresponding pairs of vertices

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.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )