Question

For a community breakfast there should be at least three times as much regular coffee as decaffeinated coffee. A total of ten gallons is sufficient for the breakfast. Write and graph a system of inequalities to model the problem.

Answer 1

Here's one inequality (r=regular, d=decaf). See if you can figure out the other.
r (greater than or equal to) 3d

Answer 2

\[y \ge 3x\] & \[x+y \ge 10\] turns into
\[y \ge -x+10\]
then i graph them

Answer 3

correct! nice job