3. What is the ratio of 1 m to 1 cm?
(A) 1 : 10
(B) 10:1
(C) 1 : 100
(D) 100 : 1​

Mr. mole left his burrow and started digging his way down.a(t) models mr. mole's altitude relative to the ground (in meters) after t minutes. a(t)=-2.3t-7 how fast did mr. mole descend?