When running multiple machines in a factory, the total sound power in decibels (dB) can be estimated using the regression equation y=119.06+10logx, where x represents the number of machines. What is the best estimate for the total sound power when 5 machines are running in the factory? A) 121 dB
B) 126 dB
C) 135 dB
D) 169 dB

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1