9. Paul and Riley are selling hats and sunglasses. Paul sold 7 hats and 5 sunglasses. He made $53. Riley sold 3 hats and 2 sunglasses for $22. How much does a hat cost and how much does a sunglasses cost?

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.

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Which is the focus of a parabola with equation y2=4x