(a) If

is the mass (in mg) remaining after

years, then


(b)

(c)
Answer:
3
Step-by-step explanation:
Reflectional symmetry<span> is also called bilateral, line </span>symmetry<span> or mirror </span>symmetry. It occurs when a line is drawn to divide a shape in halves so that each half is areflection<span> of the other. Some shapes or objects, such as circles, squares and triangles, have one or more lines of </span>symmetry<span>. Mark as brainliest if u can thanks</span>
I assume it is:
2x/(-5x+x^2), then you can simplify the x, but only if it is not zero:
2/(x-5), for x different to zero.
Im sure its <span>For any x-value, the y-value of the exponential function is always smaller.</span>