Which could be the resulting equation when elimination is used to solve the given system of equations?

5a+5b=25

-5a+5b=35

Ratios : a store is having a sale on books may bought 5 books and spend $40 if she buy 2 more books how much will she pay

If f (x) = 2x+4 find f (x+1)

Multiply 8.88x10 to the 4th power. Explain the shift of the digits and the change in the value of each digit

Suppose you are planning to open a checking account so you can deposit paychecks from your job. How will you decide on a bank?

How many gallons of gas are left after driving 200 miles

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.