=3.1*10^3
=3.1*10*10*10
=3.1*1000
=3100
Answer:
Four times his sister's age would be 4b. his age is two years less, so we need to subtract 2.
put together, this is 4b - 2.
Swap x and y, f^-1 is and solve for y to get f^-1 the inverse of f. f(f^-1)=f^-1(f)=x is the identity as a check
f(2)=3*2+1=7 (2,7)
f^-1(7)=2 (7,2)
Answer:
A
Step-by-step explanation:
Domain: [-∞, ∞]
Range: [-9, ∞]
