This is the one I ended up figuring out:
startScale = thisComp.height/height*100
endScale = 100
scaleUpTime =4
s = ease(time,inPoint,inPoint+scaleUpTime,startScale,endScale);
[s,s]
I’m learning quickly on Google there are many ways to accomplish expressions in After Effects lol.
I love this! Such a neat and tidy zoom!