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Teen birthrates in the U.S. declined from 62.1 births per 1,000 teenagers in 1991 to 48.5 in 2000. What is the percent of decrease?
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
Max's parents bought a new car that cost $18,575 before taxes. They paid $1,532.44 in sales tax. What is the sales tax rate?
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
Simplify (3* 10 ^8)(7* 10^7)
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
Walter is a waiter at the Towne Diner. He earns a daily wage of $50 plus tips that are equal to 15% of the total cost of the dinner he serves. What was the total cost of the dinners he served on Tuesday if he earned $170?
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
There are 400 students in Zack's school. 21% of the students are enrolled in choir. Of these, 75 are enrolled in band. How many students are enrolled in both choir and band?
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
Simplify 3(2.416* 10^ 2)
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
The width of a plant cell has been measured as 1.276* 10^ -5 meters. How is this value written in standard form notation?
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
Rewrite the number 0.000000437 using scientific notation.
0.00001276 meters
4.37* 10 ^ -7
2.1*10^16
$800
63 students
22%
7.248* 10 ^2
8.25%
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