Which scenario is best represented by the graph?

a.
kaitlyn walked at a steady pace for 4 hours.

b.
kaitlyn drove at varying speeds for 4 hours and then stopped for gas.

c.
kaitlyn walked as fast as she could for 15 minutes and then ran for the next 15 minutes.

d.
katilyn bought a book that cost $4.

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

If m 17 27 90 63 ** picture is attached

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k