Solve the system using substitution.

x + y = 8

y = 3x

A. (4, 12)

B. (2, 6)

C. (1/2, 3/2)

D. (-4, - 12)

What is the standard form of 800,000,000,000 + 20,000,000,000 + 3,000,000,000 + 50,000,000 + 4,000,000 + 600,000 + 50,000 + 8,000 + 700 + 80 + 6

A rectangle has a length 2 ft less than three times it's width. What is the area of the rectangle when it's width is 2ft?

A football player kicks a ball with a force of 50N. Find the impulse on the ball if his foot stays in contact with the football for 0.01s.

How much is 5tenths-2tenths?

Show algebraically that the sum of 2 consecutive numbers is always odd

Determine whether each sequence is arithmetic, geometric, or neither. explain. 7,13,19,25, ...

Simplify: 7 (-8y) + 4 (-6+6y)

Southwest Dry Cleaners believes that it will need new equipment in 7 years. The equipment will cost $26,000. What lump sum should be invested today at 6%, compounded semiannually, to yield $26,000? a. $ 17,189.06 b. $ 23,243.29 c. $ 21,091.71 d.

6a^2 - 12a equals what

A box contains 3 black pens, 7 blue pens, and 5 red pens. She pulls a red pen, puts it back, pulls a blue pen, puts it back, and then pulls a black pen and uses it. P (red, then blue, then black)