Maya dropped her keys down a storm drain. Her hand was 111 meter above the ground. The keys fell 101010 meters to the floor of the drain. The following equation describes this situation.
\quad 1 - 10 = -91−10=−91, minus, 10, equals, minus, 9
What does -9−9minus, 9 tell us?

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?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0