Expanding brackets x (4x-1)

Are two negative integers always, sometimes or never positive?

The ratio of girls to boys in the grade is 7 to 8. If there are 140 girls, how many boys are there

A librarian has weekends off and has 10 paid vacation days per year, including holidays that fall on weekdays. If his salary is $32,500 per year, what is his pay per workday?

How many different arrangments can you make with 10 blocks in a row

The total cost of 2 bracelets and 3 necklaces is $15.50. The total cost of 4 bracelets and 1 necklace is $13.50. Let b represent the cost of each bracelet and n represent the cost of each necklace. 2b+3n=15.50 4b+n=13.50

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.