Answer:
22/3
Step-by-step explanation:

Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20
This is the graph for y=-2(times)5^x
Hope this helps!
Answer:
0.531 (3 s.f.)
Step-by-step explanation:

Power rule is used for the 3rd step.
Answer:
I may be dumb but i think it's 1/3
Step-by-step explanation: