x = 35
Steps:
Its quite simple, just go through each of the options for x and plug them in.
5(17.86)/7 +5
5 * 17.86 =89.3
89.3/7 = 12.8 (rounded)
12.8 + 5 = 17.8 (incorrect)
5(25)/7 + 5
5*25 = 125
125/7 = 17.8 (rounded)
17.8 + 5 = 22.8 (incorrect)
5(49)/7+5
5*49 = 245
245/7+5
245/7 = 35
35+5=40(incorrect)
5(35)/7 + 5
5*35 = 175
175/7+5
175/7=25
25+5 = 30(correct)
Hope this helps you! (:
-PsychoChicken4040