Chapter 12 - Exponential Functions and Logarithmic Functions - 12.1 Composite Functions and Inverse Functions - 12.1 Exercise Set - Page 788: 81

$25$

Apply the order of operations (PEMDAS) We solve the (P) parentheses first : $32\div 4-16\div 8=\qquad $.... D before S (division before subtraction) $=8-2$ $=6$ $...=3^{3}+2^{2}-6\qquad$.... (now, E - exponents) $=27+4-6$ $=31-6$ $=25$