The graph of the revenue function f(x) = –2x2 + 100x is shown to the left. In the function, revenue is dependent on the number of items sold, x. How do the mathematical and reasonable domains compare? mathematical: −[infinity] < x < [infinity] reasonable: 0 ≤ x ≤ 1250 mathematical: x ≤ 1250 reasonable: 0 ≤ x ≤ 50 mathematical: −[infinity] < x < [infinity] reasonable: 0 ≤ x ≤ 50 mathematical: x ≤ 1,250 reasonable: 0 ≤ x ≤ 1,250.

Apopulation of deer mice was introduced into a desert ecosystem. being dark-colored, the deer mice stood out in the sand and were easy prey for predators. over a few years, the color of the mice changed from dark brown to light brown. what role does natural selection play in this example? a. the change of color camouflaged them, which them hunt better. b. the change of color enabled them to regulate their body temperature. c. the change of color allowed them to hide better from predators. d. the change of color made their bodies tolerant to the harsh desert sand. e. the change of color allowed them to deflect the excessive heat.

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The main reason that you should secure loose objects in your car before you drive is that a. objects too close to the engine may be affected by the heat b. they are likely to get damaged moving around your car c. they may be thrown into a spot that disrupts your driving d. they will be more easily retrieved from a single storage location