I add 7 to a certain number. I double the result. My final answer is 34. What was my number?​

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement