Students in a science class investigated how the speed of sound changes with the air temperature outside. The data are shown in the scatterplot.
Time Elapsed
Attempt due: ALl
10 Minutes,
Science Investigation

Y
355
350
345
Speed of Sound (m/s)
340

335.
330
0
10 20 30 40
Air Temperature (°C)
Based on the scatterplot, what is the best prediction of the speed of sound when the air
temperature is 50°C?
F 350 m/s
G355 m/s
H 360 m/s
J 365 m/s

Alawn mower manufacturer incurs a total of 34,816 in overhead costs and 388 per lawn mower in production costs. how many lawn mowers were manufactured if the average cost of productions is 660

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?