Ten people were chosen at random and surveyed. Their annual incomes (X) and the amounts of their annual charitable giving (Y) are both shown in the table below. Using technology, compute the correlation coefficient, r, and determine if there is a correlation between the variables.
A.
r 0.86 ; strong correlation

B.
r -0.86 ; weak correlation

C.
r -0.14 ; weak correlation

D.
r 0.14 ; strong correlation

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that