Answer:21
Step-by-step explanation:
h=-16²+12t+6
8=-256+12t+6
256-6+8=12t
-258=12t
t=-258/12
t=21.5
Answer:
3/2 pound of clay is used
x=10
8x+10=6x+30
8x-6x=30-10
2x=20