Answer:
49-7F
Step-by-step explanation:
F(7)+xF=2x+5x
F(7)+xF=7x
F(7)=7x-xF
F(7)=x(7-F)
substitute x=7 in the equation above
Therefore, 7(7-F)
=49-7F
340 in.
L x W x H
17 x 4 x 5 = 340
1/2
Answer: k=11
Hence proved!