What is the sum of (2x - 5y) and (x + y) ?

If I have 10 dollars and I win 6 out of 10 and lose 4 out of 10 and bet 1$ each trade, how much should there be left after 10 trades?

What would the sum of two numbers be to equal 48 if one number was three times more than the other one?

By the transitivity property if A > b and b > c then A) A = C B) A < C C) A = C D) A > C

Is sarah is 24 years younger than her mom and if the sum of their age is 68 how old is sarah?

What is 7,200,000 written in scientific notation? A. 7.2 x 10^3 B. 7.2 x 10^4 C. 7.2 x 10^5 D. 7.2 x 10^6

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.