Help me ASAP

It's a long question in bits.

See picture attached.

Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!