8) Solve the following system by the substitution method. Check the solution (s).

6x + 7y = 3

x + y = 1

Qué capital al 4.5 % durante 5 meses produce un interés de $ 120.

Which products in a difference of squares?

Which mathematical operation is represented by the number sentence 45 : 9 = 5?

Bobby worked 7.25 hours and Jimmy worked 6.75 hours. If Bobby made $8.25 per hour and Jimmy made $7.50 per hour, what was the total amount of money earned?

You would like to make orange juice for the Queen of Canada but her tastes are very particular. She requires 400mL of orange juice, but it has to be the correct concentration, which is 23% concentrate.

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.