Linda planned to spend 9 hours practicing piano his week. By Tuesday, she had spent 2 1/2 hours practicing. How much longer does she need to practice to reach her goal?

Ben can wash a car in 2 hours while his younger brother James can do it in 3 hours. How longwill it take to wash the car if they work together?

please solve it completly. How much do you share on social media? Do you have accounts linked to your computer, phone, and tablet? The average teen spends around fivehours per day online, and checks his or her social media account about 10 times each day. When an image or post is shared publicly, somestudents are surprised at how quickly their information travels across the Internet. The scary part is that nothing online is really private. All it takes isone friend sharing your photo or updates with the public to create a very public viral trend.For this project you will use what you have learned about exponential functions to study what happens if a social media post is shared publicly. 1. Write an exponential function to represent the spread of Ben's social media post.2. Write an exponential function to represent the spread of Carter's social media post.3. Graph each function using at least three points for each curve. All graphs should be placed together on the same coordinate…

Let's say the countdown for a space shuttle launch has begun. At "T minus 25 hours" (that is, 25 hours before launch), a problem occurs. If the technicians have not fixed the problem by T minus 8 hours, the launch will have to be scratched. How much time (in hours) do the technicians have to correct the problem? hr