Question

a pot of water starts at 68 degrees it is put on stove where it heats at a rate of 4 degrees per minute how long will it take to reach 100 degrees

Answer 1

y=68+4x
100=68+4x
-68=-68
32=4x
Divide both sides by 4
x=it will take 8 min. for the water to reach 100 degrees
y=total degrees
x=# of minutes