Adding negative numbers

Add.

6 + (-8) =

Donald bought 15 souvenirs during 3 days of vacation. After 4 days of vacation, how many total souvenirs will Donald have bought? Assume the relationship is directly proportional. souvenirs Submit

A 2-pound box of spaghetti costs $2.50 philip says the unit cost is 2/2.50=0.80 per pound explain his error

Shawna says her mug holds 100 milliliters. She'll says that the mug holds 1 liter. Is Shelly correct?

Como resolver y=1-2.5

Which list shows all the factors of 75? 1, 3, 5, 15, 25, 75 1, 3, 5, 13, 25, 75 3,5, 13, 25 3, 5, 15, 25

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.