Solve:
4x + y = 10and – 23 –y = 4

Evaluate the expression for the given value of the variable 7a - 4a for a =8

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)

Which of the following describes the symmetry of the graph of y = x3?