from here you will do order of operations and do -240 (-.26) first then do 144+100= so we will get 244+ 62.12= 306.12 square root (306.12) which will get you 17.49 exactly and you round to the nearest tenth which gets you 17.5 and round again and you get 18
8=3 16=6 24=9 your answer would be 9. the easiest way to solve these is see if the 2nd number is a multiple of the 1st, and then just do what i have on the top. Hope this helps you!!