Mirror formula : \\\\(\\dfrac{1}{v} +\\dfrac{1}{u}=\\dfrac{1}{f}\\\\)...........(1)So, \\\\(u=-27cm\\\\)Concave mirror have negative focal length.\\\\(f=-18cm\\\\)Putting the values in (1),\\\\(\\dfrac{1}{v}+\\dfrac{1}{-27}=\\dfrac{1}{-18}\\\\)We get , \\\\(v=-54cm\\\\)Also,Magnification = \\\\(\\dfrac{h_2}{h_1}=\\dfrac{-v}{u}\\\\)\\\\(\\dfrac{h_2}{7.0}=-\\dfrac{-54}{-27}\\\\)\\\\(h_2=-14.0 cm\\\\)Image will be real and inverted and will be of size 14 cm.