You don’t have the picture up so nobody can answer this♀️
If you rounded off 129 to the nearest ten the answer would be 130
Answer:

Step-by-step explanation:
From the question we are told that:
Radius 
Coupler 
Generally the equation for Stroke in a slider-crank Mechanism x is mathematically given by



All you have to do is multiply 23/4 by 4/3 which gets you 92/12
Simplify that and you get 23/3
-2(5)^2+2(5)-3
-2(25)+10-3
-50+10-3
-40-3
=-43