If you subtract 15 from my number, multiply the result by 4, and then subtract 51 from that result, you will get my number. Find my number.

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Solve the equation by completing the square. x^2+2x=17