Four families went out for lunch. the total food bill came to $167. the families also left a $30 tip for the waitress. if each family spent the same amount, about how much did each family spend on dinner? explain how tou found your answer.

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

X2 + y 2 = 36 x + y = 6 solve the system of equations.

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)