A thermometer reading 7°C is brought into a room with a constant temperature of 33°C. (a) If the thermometer reads 13°C after 2 minutes, what will it read after being in the room for 4 minutes? For 9 minutes? (b) Graph the relation between temperature and time. Use TRACE to verify that your answers are correct.

Please answer number 2, please show work. Show the formula used, etc etc.

Measurements are made at two different times. Find the absolute change and then find the relative change. Round answers to the nearest tenth if necessary.   Last year the Mayor of the town of Little Heath had an approval rating of 73%. This year his approval rating had fallen to 35%

An office worker just got a raise from $15.00 to $18.00. What is the absolute change?   What is the relative change?

A new car worth $22,000 is depreciating in value by $2000 per year. Complete parts (a) through (c) a. Write a formula that models the car's value, y, in dollars, after x years. b. Use the formula from part (a) to determine after how many years the car's value will be $16,000. c. Graph the formula from part (a) in the first quadrant of a rectangular coordinate system Then, show your solution to part (b) on the graph. a. A formula that models the car's value, y, in dollars, after x years is (Type an equation.) b. After years, the car's value will be $16,000. (Type a whole number.) c. Choose the correct graph below. OA. OB. Oc. OD. Ay 22,000 Ay 10+ 10- 22,000- 0+ 10 2200 2200 Click to select your answer(s). P Type here to search A 4) C PrtSc Insert Delete F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F1 F2 @ & Backspace

(SUB-PART C ONLY PLEASE) Each row represents an experimental “run” (in this case, averaged sample of mango wine). Column A shows the run number; Column B shows the percentage of ethanol; Column C shows the amount of glycerol (in g/L); Column D shows the amount of acid (in g/L); Column E shows the temperature of the run (in °C); and Column F shows the pH of the run. Y represents Ethanol of mango wine. 1. Create a scatterplot of the ethanol data for all 20 runs (CREATED) a. Draw a graphical representation of the model that you chose to use. (CREATED WITHIN SCATTERPLOT) b. Comparing the model to your data, evaluate its fit in one or two sentences. (LINEAR MODEL; The conditions to say that the model is a good fit are as given below: To say that the model is the good fit, the coefficient of determination should be high. Atleast one the predictor variables should be statistically significant in predicting the response variable. ) c. Replace the generic Yi = β0 + ε with the information you…

(1) Delbert is scuba diving at a depth of 400 meters when he begins to ascend. He ascends by 10 meters each minute. Write an equation for Delbert’s altitude, A, in terms of t. Also: Complete the table of values showing Delbert’s altitude, A, t minutes after starting his ascent.  t    =   0        10       20     30       40 A   =   ?          ?         ?        ?         ?

The height above ground (in feet) of a ball thrown vertically into the air is given by S = 80t – 16t2 where t is the time in seconds since the ball was thrown. (a) Graph this equation with a graphing calculator and the window t-min = -2, t-max = 10; S-min = -20, S-max = 150. S S 150 150- - 10 -8 -6 -4 -2 2 -2 4 6 8 10 100 100 -50 09 50 - 100 - 100 -2 4 8 10 - 10 -8 -6 -4 -2 - 150 -15아 (b) Estimate the time at which the ball is at its highest point, and estimate the height of the ball at that time. t = 16 X S S = 96 X ft

The relationship between a temperature in degree Celsius (C) and In kelvins (K) is given by K = C + 273. What is Celsius temperature for a temperature of 10 kelvins?