Answer:

Step-by-step explanation:

Answer:
The first one. L (t) = 0.37t + 39.67
Step-by-step explanation:
The "0.37t" is about 0.37 years of life expectancy added for each year that passes the "+ 39.67" is the starting life expectancy that has to be added to whatever the rising trend may be. just multiply 0.37 by 20 and youl have the rising trend.
Answer:
SA=2lw+2lh+2hw, to find the surface area
Step-by-step explanation:
6x-7=4x+7
6x=4x+14
2x=14
x=7