Evaluate the expression when = c7 and = x-7.

x-3c

What is the exterior and interior angle of a 18 sided polygon

Calculate 0.01% of 55 rounded to the nearest hundredth

A mixture of chlorine and water contains a total of 60 gallons. There are 30 gallons of pure Chlorine in the mixture. (I) what percent of the mixture is water? (ii) what percent of the mixture is chlorine?

Convert 4.4 to a percent

What is the degree of the following polynomial? -4x + 5x2 - 2x5 + 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.