The data represent the ages of people working at a store.

19, 27, 20, 26, 20, 24, 32, 23, 20, 19, 21

what is the first quartile of these ages?

a.
19

b.
21

c.
20

d.
26

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?