quadratic functions q and w are graphed on the same coordinate grid . the vertex of the graph of q is 18 units below the vertex of the graph w . which pair of functions could have been used to create the graphs of q and w?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out