81% of people surveyed own a smart phone. If 2,500 took the survey, how many of them own a smart phone?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.