The list below shows the number of texts sent by a group of 6th graders for 5 consecutive hours.
30 90 270 810 2,430
By what factor did the number of texts change each hour, from the first to the fifth
hour?
A: 30
B: 60
C: 3
D: 2,400

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000