Question

What geological feature is created when streams emerge from mountain canyons in arid regions?

Answer 1

To find the number of miles, \(m\), it will take for Rent A Car and City Cars to cost the same amount, set the total cost equations equal to each other and solve for \(m\). The equation is \(16.25 + 0.90m = ? + 0.60m\) where "?" represents the rental fee and one-time fee for City Cars.

Step-by-step explanation:

To determine the point at which the costs are equal, set up an equation equating the total costs for both companies. For Rent A Car, the total cost is the sum of the rental fee, one-time fee, and the additional cost per mile. This is expressed as \(16.25 + 0.90m\). For City Cars, the total cost is represented by the rental fee plus one-time fee and the additional cost per mile, \(? + 0.60m\), where "?" is unknown. By setting these two expressions equal to each other, you create the equation \(16.25 + 0.90m = ? + 0.60m\).

To solve for \(m\), first, subtract \(0.60m\) from both sides of the equation to isolate the terms with \(m\). This results in \(16.25 + 0.30m = ?\). Then, subtract $16.25 from both sides to isolate \(0.30m\), yielding \(0.30m = ? - 16.25\). Finally, divide both sides by \(0.30\) to find \(m\), which gives the number of miles required for the costs of Rent A Car and City Cars to be equal. Solving this equation provides the specific mileage at which the total costs for both car rental companies are equivalent.

Answer 2

When streams emerge from mountain canyons in arid regions, a geological feature that is often created is a playa lake. Playa lakes are temporary lakes that form in depressions in the landscape and can leave behind evaporite minerals.

Step-by-step explanation:

In arid regions where streams emerge from mountain canyons, the geological phenomenon commonly observed is the formation of playa lakes.

Playa lakes are transient bodies of water that develop in arid landscapes when precipitation or runoff accumulates in natural depressions.

These depressions are often remnants left by streams exiting mountain canyons.

As water in playa lakes evaporates, it deposits evaporite minerals like salt and gypsum, contributing to distinctive geological formations in the vicinity.

Notable examples include salt flats such as the Bonneville Salt Flats in Utah and the Salar de Uyuni in Bolivia.

Playa lakes play a crucial role in arid environments by offering temporary habitats for wildlife and serving as essential water sources for human communities in these challenging regions.

The dynamic nature of playa lakes underscores their significance in both ecological and geological contexts within arid landscapes.