Can someone help me x -y =1
and can yall explain how you solved it

Three times the sum of a number and seven is negative thirty-six. what is the number?

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

What is the value of f(x) = 2.2 for f(-2)?