Prove that 3: 8 is equivalent to 12: 32

Given: ac and db are diameters. m∠3=

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)