4pounds of apples cost $1.96. find the average rate

The production line where you work can assemble 5 appliers every 30 minutes at this rate how long should it take the line to assemble 125 amplifiers

Which multiplicative property is being illustrated below? (type commutative, associative, or identity) 5 × 2 × 4 = 2 × 5 × 4

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!