A statistics student wanted to determine if the distance to a destination was related to the price an airline would charge to fly to that destination. The student did a regression of Airfare (y) on Distance (x) and obtained the printout shown from a statistical software package. Predictor Coef Constant 83.02 Distance 0.117 SE Coef 49.29 0.028 t-ratio 1.689 4.179 P 0.046 0.000 S = 25.25 R-Sq = 63.28 R-Sq(Adj) 64.7% What is the equation of the least-squares regression line? O g = 0.028 + 49 29x 9 = 49 29 + 0.028x 9 = 0.117 + 83.02% y = 83 02 + 0 117% y = 83 02 +25.25% Save and Exit Next Subunit

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.

After a dreary day of rain, the sun peeks through the clouds and a rainbow forms. you notice the rainbow is the shape of a parabola. the equation for this parabola is y = -x2 + 36. graph of a parabola opening down at the vertex 0 comma 36 crossing the x–axis at negative 6 comma 0 and 6 comma 0. in the distance, an airplane is taking off. as it ascends during take-off, it makes a slanted line that cuts through the rainbow at two points. create a table of at least four values for the function that includes two points of intersection between the airplane and the rainbow. analyze the two functions. answer the following reflection questions in complete sentences. what is the domain and range of the rainbow? explain what the domain and range represent. do all of the values make sense in this situation? why or why not? what are the x- and y-intercepts of the rainbow? explain what each intercept represents. is the linear function you created with your table positive or negative? explain. what are the solutions or solution to the system of equations created? explain what it or they represent. create your own piecewise function with at least two functions. explain, using complete sentences, the steps for graphing the function. graph the function by hand or using a graphing software of your choice (remember to submit the graph).

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.