The graph of an equation with a negative discriminant always has which characteristic?
Ono x-intercept
no y-intercept
no maximum
no minimum

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

In the diagram of circle o, what is the measure of zabc?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =