Why would you check into a location with foursquare?

*! 20 points! *jeff wants to create a website with interactive and dynamic content. which programming language will he use? a. dhtml b. html c. css d. javascript

For positive constants a and b, the force between two atoms in a molecule is given f(r) = −a r2 + b r3 , where r > 0 is the distance between the atoms. note: a and b are upper case letters. (a) find f '(r) = (b) find the critical point for f(r). r = (c) find f ''(r) = (d) find the value of r so that f ''(r) = 0.

Which of the following calculates the total from the adjacent cell through the first nonnumeric cell by default, using the sum function in its formula? -average -autosum -counta -max