In this example we considered the function W = f(T, v), where W is the wind-chill index, T is the actual temperature, and v is the wind speed. A numerical representation is given in this table. (a) What is the value of f(-20, 40)? What is its meaning? f(-20, 40) = which means that if the temperature is -20°C and the wind speed is 40 km/h, then the air would feel equivalent to approximately °C without wind. (b) Describe in words the meaning of the question "For what value of v is f(-10, v) = -15?" The question is asking: when the temperature is °C? Answer the question. V = km/h Answer the question. (c) Describe in words the meaning of the question "For what value of T is f(T, 10) = -39?" The question is asking: when the wind speed is °C? °C, what wind speed gives a wind-chill index of °C km/h, what temperature gives a wind-chill index of

Consider the function y =-4* –11 +21. -4* -11 +21, the base function y = 4* must be axis and it is translated 1. To achieve the function y %3D reflected in the i ii units upward. The statement above is best completed by the answers in row: Row i ii У-аxis 21 Х-аxis 21 у-аxis 11 х-аxis 11

The cost, C (in dollars) to produce g gallons of ice cream can be expressed as C = f(g). (a) In the expression f(250) = 350, what are the units of 250?? what are the units of 350?? (b) In the expression ƒ'(250) = 1.4, what are the units of 250?? what are the units of 1.4? ? (Be sure that you can carefully put into words the meanings of each of these statement in terms of ice cream and money.)

Given the following table, find each value. xf(x) -6-10 10 5 -2 8 -9 7 8 10 -6 (a) f (7) = (b) ƒ(10) = (c) f( – 6) = (d) ƒ -'(8) : 7.