Answer:x=0Step-by-step explanation:You are asked what is the number to be use as the exponent of [tex]7^{2}[/tex], in order to get as answer "1".Use the property of exponents that sates that : [tex]a^0=1[/tex]In your case [tex]a=7^2=49[/tex] so the exponent "x"must be = 0 (zero)