Find the decimal equivalent to 4

15

One calling card has a $0.50 connection fee and charges $0.02 per minute. Another card has a $0.25 connection fee and charges $0.03 per minute. After how many minutes would a call cost the same amount using either card?

12x + 2y = 112 What does x equal? What does y equal?

The formula K=59 (F-32) + 273.15

What is the slope of the line x=2

Find all the values of x where the tangent line is horizontal. 2x^3+36x^2+192x+12

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.