How to find the volume without the width

What is the radius of a sphere that has a surface area of 196π sq ft?

What is the common ratio of the geometric sequence shown below -2,4,-8,16

What does f (x) = |x| look like?

Jody is working two jobs, one as a carpenter and one as a website designer. He can work at most 50 hours per week and makes $35 per hour as a carpenters and $75 an hour as a website designer.

The dot plots below show the ages of students belonging to two groups of salsa classes: A dot plot shows two divisions labeled Group A and Group B. The horizontal axis is labeled as Age of Salsa Students in years.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.