Small balloons cost 95 cents each and large balloons cost $1.45 each.
Let x represent the number of small balloons
Let y represent the number of large balloons
Shelby has $15 to spend on balloons
She needs at least 3 large balloons.

0.95x+1.45y≥15
0.95x+1.45y≤15
y≥3
y≤3
x≥0