4;81
You subtract 5 from 9 to get 4; 5(9)= 45 9(4)=36 45+39=81
Since we know f(x)=11 all we need to do is substitute and solve. so
11=-2x+3 subtract 3 from both sides
8=-2x divide both sides by -2
-4=x
sub back in to check
-2(-4)+3=8+3=11 looks good
In order to figure this out, we can set up a proportion and simplify using cross multiplication.

One grapefruit costs
89 cents.
Answer:
B
Step-by-step explanation: