How can I solve 2x+y=-3

What math operation determines the pattern? 48, 3, 45, - 42?

Solve for t: A = p + prt

Brian claims that he can eat a pie that is divided into 6 equal pieces in 2 minutes if he can eat the whole pint 2 minutes how long does he have to eat each piece

Which steps would prove the circles similar?

Divide 3.7:0.006 round the answer the nearest hundredth?

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.