can someone help me please

Answer:
12.32
Step-by-step explanation:
So by using y1 +y2/x1+x2 we can find the ratio.
the y1 will be 4 and y2 will be 13.
the x1 will be 5 and x2 will be 6
this is equivilent to 17/11 (4+13/5+6)
17/11 =1.54545454... we can simplify to 1.54
8*1.54=12.32
this might be wrong I haven't done this math in years