The number of pens used varies directly with the number of pieces of paper needed. If 12 pens are used when 40 pieces of paper are needed, how many pens will be used when 240 pieces of paper are needed?

What is y-8=3 (x+1) written in standard form?

Combine like terms and note the degree 8a^6bc-abc-8a^6bc

What is the solution of the equation 3x+7=1?

Write an algebraic expression for the following phrase 3 more than twice a number

13.1233596 to the nearest hundred

How do you write 120% as a decimal and as a fraction

Find the derivative of the function. y = √ (11x + √ (11x + (√11x)))

Carmen spent $88 at the mall the money she spent was 25% of the total amount she had in her wallet

Which of the following situations can be modeled with a periodic function? A) the height of a football after it has been thrown B) the height of a person riding on an escalator C) the height of a building after it has been constructed D) the height

Solve 1/3 x = - 4/5?