If three empanadas and two drinks cost $9, and four empanadas and
one drink costs $9.50, how much does a drink cost?
If f(x) = 2x and g(x) = 5x, what is f(g(x) when x = 3?
Suppose the government wants to impose a tax on fossil fuels to reduce
carbon emissions. The cost benefit is modeled by ln(1 – P) = -0.0039 – 0.0051x, where x represents the dollars of tax per ton of carbon emitted and P represents the percent reduction in emissions of carbon. (P is in decimal form.) Determine P when x = 63. Round to three decimal places.
I know the answer is 0.278 but i need help explaining step by step on how to solve this please.
Suppose f(x) = 32.6 + 1.2log (x + 1) models salinity of ocean water
to depths of 1000 meters at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 771 meters
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