percentage change in price

A cloth stores offers "25% off the sale price". A dress whose original price is $100 has a sales price that was 20% less than the original price. Then what percentage of the original price is the final price? => 60% or 40% or 50%..

The table shows the population of California and Florida. Find the percentage change in the population of Florida from the year 2000 to 2002. => 7% or 7.67% or 6.67% or 8.67%..

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 percentage change in the population of the two states, Colorado and Connecticut, for the year 1990 - 2000 is given as 30.6 and 3.6. Estimate the product of the percentage changes of the two states, rounded to the nearest whole numbers. => 122 or 125 or 12..

Lindsay bought a sandwich that was priced at 68 cents. What is the best way to give the change by using the fewest number of coins? => 3 quarters, 1 dime, 1 nickel and 3 pennies or 1 quarter, 2 dimes, 1 nickel and 1 penny or 2 quarters, 1 dime, 1 nickel and 3 pennies or 1 quarte..

The following table gives the price of sugar in two different years. Find the percentage of increase in the price of the sugar. Year 1990 1999 Cost of sugar (in $ per lb) 4 8 => 103% or 100.3% or 100% or None of the above..

David sells cone ice creams. An empty cone has a vertical length of 8 cm and a diameter of 8 cm. He sells 170 ice creams on a day, and charges $2.5 for an icecream. Calculate the additional income he would earn if the dimensions of the cone were reduced by 0.5 cm each, assuming that he does not ..

Describe how the price of a pen changed after three years. Time Price of a Pen Initial $5.00 after 1st year $6.00 after 2nd year $6.50 after 3rd year $6.95 => varying or decreasing or increasing or constant..

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 dollars..

Suppose hardware store customers are willing to buy B( t ) boxes of bolts at t dollars per box where B( t ) = 4 t 2 + 8 t + 32 ( 1 ≤ t ≤ 8). Find the instantaneous rate of change in B( t ) when the price is 4 dollars per box. => 32 or - 40 or 40 or 136..