rate of price change

The graph shows the relationship between number of toys and their price in dollars. Interpret the meaning of the slope as a rate of change. => Cost of each toy is $2. or Cost of each toy is $8. or Cost of each toy is $4. or Cost of each toy is $6...

The production cost C (in dollars) of manufacturing x bulbs is given by C( x ) = 2 x 2 + 5 (0 < x ≤ 4). What is the average rate of change of cost price per bulb when the production increases from 2 to 4 bulbs? => 4 dollars or 2 dollars or 12 dollars or 24 dollar..

If a quantity y varies with respect to another quantity 'x' satisfying some rule y = f(x), in other words if y is a function x, then represents the rate of change of y with respect to x For x = x 0 , dy/dx at x 0 is called the rate of change of y with respect..

Find the selling price if the original price is $85 and markup rate is 49%. => $130.10 or $128.10 or $126.65 or none of the above..

The price of 2 CDs is $8. Find the unit rate. => $5 or $6 or $7 or $4..

Rate of reaction basically means the speed at which a chemical reaction occurs. The speed of a reaction is determined by monitoring the concentrations of the reactants or products at intervals of time. The volume of the reaction vessel is kept constant and there is no addition to or remo..

Find the original cost if selling price is $24.65 and markup rate is 45%. => $20 or $17 or $14 or none of the above..

The selling price of a mousepad in a store is $13.50. The markup rate is 10%. Find the store's cost of the mousepad. => $10.77 or $12.27 or $15.27 or $13.77..

Sarah bought 3 lb of apples at the rate 80¢ per lb. Find the price of apples that Sarah bought. => 280¢ or 24¢ or 340¢ or 240¢..

A stock priced $130 increases at a rate of 7% per year. Which of the following models the situation? => y = 130(1.17) x or y = 130(1.7) x or y = 130(1.07) x or y = 130(1.27) x..