# Week 8 Day 1 Lesson Summary

What does it mean to "solve for a variable"?

How do we solve for a variable?

Solve the following eqaution for *h*:
*k * h* = 2

Solve the following equation for *r*:
*50 - 4r = p*

Suppose you are organizing a party and have a budget of *b* dollars for the appetizers. You plan to order *v* vegetarian spring rolls at $0.75 each and *s* shrimp rolls at $0.95 each.
The equation 0.75*v* + 0.95*s* = *b* represents this constraint.
Solve the equation for *s*. When might it be handy to use the equation when it is solve for *s?*