1. w=2
2. x=2
3. y=-5
4. a=1
if these helped please mark brainliest
The y intercept and -4 and going down 2 and 1 right u til you reach the end of the graph
To model half-life, use the formula

. Here,

is the amount remaining after a length of time

.

is the amount that you start with.

is the half-life. You plug in 50 for

, 10 for

, and 25 for

. You get

.