In ms. harrington's sixth grade
class,

25
out of
30
students bought their lunch. how many students out of every
6
bought their lunch?

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =