Using the formula P = 2 (a + b), find a when P = 15 and b = 5.

1) 2.5

2) 5

3) 8

4) 10

The range of which function is (2, infinity) ? y = 2x? y = 2 (5x) ? y = 5x + 2? y = 5x + 2?

There are 90 girls and 60 boys in the sixth grade at a middle school. Of these students. 9 girls and 3 boys write left-handed. What percentage of the sixth graders at this write left-handed?

Nasir walked 3/5 mile in 1/2 hour. How fast did he walk, in miles per hour?

Calculate the area of a circle with radius of 1m

What is 4/5 minus 2/3

How do I check my answer after solving the equation: 9.5x=38

tom and arif had $245 altogether. after tom spent $20 and arif spent $75, tom had twice as much money as arif. how much money did each have at first

Simplify: (x - 5) (7x2 - 8x - 7)

What's the greatest whole number that rounds to the number 277,300

The population of a city in 2009 was 34,000. By 2014, the city's population had grown to 46,400 people. Assume that the population of the city has grown linearly since 2009 and that it will continue to grow this way.