I don't understand this exercise

Use the multiplier method to incrases £258 by 43%

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.

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.