I Conceptual and Analytical 1. (a) Rewrite the following expressions using the lag operator. [Show steps] Yt=₁+0.8-1 +0.861-2 (b) Rewrite the following expressions without using the lag operator. [Show steps] 3t = (1+511081²) t L-0.6L

The feed of a drill is the depth of material that the drill penetrates in one revolution. The total depth of penetration equals the product of the number of revolutions and the feed. Compute the feed of a drill that cuts to a depth of 3.300 inches while turning 500.0 revolutions.

Mouse populations can double in 8 months (A=2A0) . How long will it take for a mouse population to triple?

In the situation of the example, how long could you keep the car if your expense account allowed 242?