What is the exact value of x in the exponential equation 2^8x − 3 = 7?

x = log4/8log2
x = 1/8log2
x= 5/8
x =log5/8

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Answer pls man im trying to get out of summer school

If f(x)=x+7 and g(x)=1/x what is (fog)(x)