Ok so you have to replace all x by 4:
F(4)= 4.4+7= 23
Answer:
Actually the answer is "A"
this is a very strange way to present a problem...
this issue her is that 
so you need 1/3 * 3 in the answer... none of them have 1/3 * 3
BUT !!!!! 1/3 + 1/3 + 1/3 is the same as 1/3 * 3 So "A" is the solution
Step-by-step explanation:
Answer:
a) 4 1/10 slices eaten
b) cannot be solved because we don't know how many slices in each pizza
Step-by-step explanation:
5*1/10=5/10
12*3/10=36/10
36/10+5/10=41/10
41/10=4 1/10 slices
A) False
B) False
C) True
<em>( I'm not too sure though, compare my answer with yours and make a decision... sorry I couldn't be more help...) </em>