Is Markiplier the best man?

Solve for x: 13x - 7 - 10x = 2

Solve with using elimination 3 х + 5y = 54 6 х + 4y = 72

What is the common denominator denominator of 5/6 & 8/21?

Given that a^b = x, evaluate the following: 2a^3b+a^2b+a^b

Cobalt-60 has an annual decay rate of about 13%. How many grams of a 300 g sample will remain after 20 years? Round the answer to two decimal places. A. 0.06 g B. 9.38 g C. 18.51 g D. 37.50 g

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.