If x = –3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?
a. the discriminant is negative.
b. the discriminant is –3.
c. the discriminant is 0.
d. the discriminant is positive. oi

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

What is the relationship between absorbance of light and the rate of photosynthesis?