What is the check digit, d, for the upc bar code number shown below?
0-24679-36163-d
a.0
b.2
c.7
d.9

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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 =