Answer:
After 80 years 432 pounds of radioactive element will be remaining.
Step-by-step explanation:
A function 
models the amount of a radioactive material.
Here x = number of years taken for decay.
If 
pound and 
pound, then we have to calculate the time for decay.
Take log on both the sides of the equation
-0.0077x = ln(0.54)
-0.0077x = -0.616186
x = 
x = 80.02 years
Therefore, After 80 years 432 pounds of radioactive element will be remaining.
Answer:
y <7
Step-by-step explanation:
15-y>8
Subtract 15 from each side
15-15-y>8-15
-y>-7
Multiply each side by -1, remembering to flip the inequality
-1 * -y > -7*-7
y <7
Answer:
18
Step-by-step explanation:
It is really asking 3 × 6 which equals 18
You can look at the attachment for a drawing but give brainlist first (im jk)
1) A parallel line has the same slope as this one y=-2x+5 whose slope is -2
So to find out which parallel line to y=-2x+5contains
