Rina's Performance Pizza is a small restaurant in Dallas that sells gluten-free pizzas. Rina's very tiny kitchen has barely enough room for the three ovens in which her workers bake the pizzas. Rina signed a lease obligating her to pay the rent for the three ovens for the next year. Because of this, and because Rina's kitchen cannot fit more than three ovens, Rina cannot change the number of ovens she uses in her production of pizzas in the short run. However, Rina's decision regarding how many workers to use can vary from week to week because her workers tend to be students. Each Monday, Rina lets them know how many workers she needs for each day of the week. In the short run, these workers are inputs, and the ovens are inputs.

variable input; fixed input

Explanation:

Based on the information given, in the short run, these workers are variable inputs, and the ovens are the fixed inputs.

Fixed inputs are the inputs that can't be easily changed that's increased or reduced in the short run while variable inputs can be increased or reduced easily.

Since Rina cannot change the number of ovens she uses in her production of pizzas in the short run, they're fixed input. The workers are variable input.

explanation:

a gas is not used in hydraulic machines as the fluid because gas is easily compressible and so if a gas is used, the energy would mostly go into compressing a gas. therefore a liquid is used in hydraulic machines as the fluid.

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