In 2002, Frisco has a student population of 8,237. For the following 6 years, the population increased about 22% each year. Write the exponential equation that models this growth.
The starting price of a Porshe is 100,000. After you drive it out of the lot, the price decreases by 5% every month you drive it. What is this equation?
What is 100,000(1-.05)^x
OR 100,000(.95)^x
300
Solve the following quadratic equation by using square roots:
5x^2 + 3 = 128
There are 13 animals in the barn. Some are chickens and some are pigs. There are 40 legs in all. How
many of each animal are there?
What is 6 chickens and 7 pigs?
400
A population of 40 crickets triples in size every month. How many crickets would there be after 5 months?
40*3^5= 9720 crickets
400
Is the sequence geometric? If so, identify the common ratio.
3,-9,27,-81
Yes, common ratio is -3
400
A concessions stand charges $8 for every hamburger and $5 for every large drink. Their goal is to make at least $240. Write an inequality that represents this situation.
8h+5d≥240
500
Fill out the table for the function...
y= 2*4^x
x=-2,-1,0,1,2
1/8, 1/2, 2, 8, 32
500
Harold had a summer lemonade stand where he sold small cups of lemonade for $1.25 and large
cups for $2.50. If Harold sold a total of 155 cups of lemonade and collected a total of $265, how
many cups of each type did he sell?
What is 98 small cups and 57 large cups of lemonade?
500
Each year the local country club sponsors a tennis tournament. Play starts with 128 participants. During each round, half of the players are eliminated. How many players remain after 5 rounds?
4 players
128(1/2)^5
500
Write an explicit formula for the geometric sequence.
4,8,16,32
an=4*2 ^(n-1)
500
One tank of gas contains 30 gallons of gasoline and is filled at a rate of 7 gallons per minute. Another tank contains 21 gallons of gas and is filled at a rate of 10 gallons per minute. How long until they have the same amount?