Consider the following ratings data to answer the questions. Copt and then Paste Special/text in Excel. Month Ratings1 64.82 54.73 53.64 31.15 38.46 38.97 58.388 36.259 34.8810 30.7811 26.2212 28.9913 20.4414 15.3315 22.516 13.817 20.918 15.6Step 1 of 5:Describe the trendStep 2 of 5:Fit a linear trend model to the data. What is the R2 value for the linear model?Enter 4 decimal placesStep 3 of 5:How well does the linear model forecast the index?Step 4 of 5:What is the linear trend model? y = [ intercept ] + [ slope ] tEnter the intercept and slope with two decimalsStep 5 of 5:Use the forecasting formula to forecast period 21.Use the rounded intercept and slope answers from step four to calculate your answer. Enter the answer with two decimal places.

Airplane speeds are measured in three different ways: (1) indicated speed, (2) true speed, and (3) ground speed. the indicated airspeed is the airspeed given by an instrument called an airspeed indicator. a plane’s indicated airspeed is different from its true airspeed because the indicator is affected by temperature changes and different altitudes of air pressure. the true airspeed is the speed of the airplane relative to the wind. ground speed is the speed of the airplane relative to the ground. for example, a plane flying at a true airspeed of 150 knots into a headwind of 25 knots will have a ground speed of 125 knots. the problems below refer to static and dynamic pressure. static pressure is used when a body is in motion or at rest at a constant speed and direction. dynamic pressure is used when a body in motion changes speed or direction or both. a gauge compares these pressures, giving pilots an indicated airspeed. in problem #s 1 and 2, use the following information. the indicated airspeed s (in knots) of an airplane is given by an airspeed indicator that measures the difference p (in inches of mercury) between the static and dynamic pressures. the relationship between s and p can be modeled by s=136.4p√+4.5. 1. find the differential pressure when the indicated airspeed is 157 knots. 2. find the change in the differential pressure of an airplane that was traveling at 218 knots and slowed down to195 knots. in problem #s 3 and 4, use the following information. the true airspeed t (in knots) of an airplane can be modeled by t=(1+a50,000) ⋅ s, where a is the altitude (in feet) and s is the indicated airspeed (in knots). 3. write the equation for true airspeed t in terms of altitude and differential pressure p. 4. a plane is flying with a true airspeed of 280 knots at an altitude of 20,000 feet. estimate the differential pressure. explain why you think your estimate is correct.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply