Find a1 for the geometric series r=-1 and s11=7

Find the 9th term in the following arithmetic sequence -7, - 1, 5, 11

What is the product of 1 2/3 and - 3 1/2? -5 5/6 - 3 1/3 3 1/3 5 5/6

Jack read 1/6 of a book on Monday and another 1/3 of it on Tuesday. He took another 4 days to finish reading the book. He read the same number of pages on each of the 4 days.

The ice-cream palace received 3 gallons of strawberry ice-cream, 5 pints of mocha ice-cream, and 1 quart of vanilla ice-cream today. how many pints of ice-cream did they receive?

Solve equation 100-6r=160-10r

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.