Explain why is it important to line up decimals numbers by their place value when you add or subtract them

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.

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

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid