A (103)(109)
=103*109
=(10*10*10)*(10*10*10*10*10*10*10*10*10)
=10*10*10*10*10*10*10*10*10*10*10*10
=1012
=1000000000000
c.1e+23
Rational because 5^3
irrational
Answer:
C
Step-by-step explanation:
Step-by-step explanation:

3(x+5)=7-x3x+15=7-x4x=-8x=-2