Aman walks 15 blocks to work every morning at a rate of 2 miles per hour. if there are
20 blocks in a mile, how long does it take him to walk to work?

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.

Can someone me and do the problem plz so i can understand it more better

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?