Andrea’s work to find the equation of a trend line through the points (48, 61) and (72, 195) is shown below.

Andrea’s Work

Step 1

Step 2

Step 3

Step 4

What was the first error that Andrea made?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.