The number of DVDs sold at Bob's store can be modeled by
the function N (t) = 4t + 3 and the price per DVD can be
modeled by the function P(t) = =12 – 2t + 7.2, where t is
the number of years since 2002.
According to this model, what is the total amount of revenue
generated by Bob's DVD sales in the year 2010?
$
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Which of the following are parts of a sphere

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212