What would be an appropriate domain if the function hin) gives the number of man-hours it takes to assemble n engines in a factory in a day, subject to a
maximum of 300 engines?

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?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*