Michael and Christopher were supposed to add up the terms of the geometric sequence 1,3,9,…,3^20

and then find the remainder when divided by 40.

Michael did the question correctly and got the answer M, but Christopher took the remainders of each term separately and then added all these remainders up to get the incorrect answer C. What is C−M?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year the population of her town is changing by a constant rate

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30