Determine the equation of the exponential function in the form h (c) = a. b* that passes through the following points: (–2, ) and (4, 18)
What’s a=
What’s b=

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school