Find a vector function that represents the curve of intersection of the two surfaces. The paraboloid z=4x^2+y^2 and the parabolic cylinder y=x^2

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?