Question 495245
Solve: 10+0.9v-0.01v^2 >= 30
Rearrange:
0.01v^2 - 0.9v + 20 <= 0
---
Multiply thru by 100:
v^2 - 90v + 2000 <= 0
-------------
Solve the Equality:
(v-50)(v+40) = 0
Positive solution:
v = 50
---
Complete solution v <= 50
===============================
Cheers,
Stan H.
============