Answer:
8/3
Step-by-step explanation:
(12/15)/(3/10)=(12/15)(10/3)=120/45=8/3
Flour
12/4 * 1 3/4 = 9/4 cups = 2 1/4 cups
Sugar
12/4 * 1 = 3 cups
Milk
12/4 * 1/3 = 1 cup
3 times 12 equal 36.
36 minus 15 equals 21.
So Joaquin uses 21 light bulbs.
(-∞,∞)
It is positive for all x
