Answer:
y+8 = 3(x-3)
Step-by-step explanation:
The point slope form of the equation for a line is
y-y1 = m(x-x1)
y- -8 = 3(x -3)
y+8 = 3(x-3)
The easiest way is to try the point (-4,1), that is, x=-4, y=1,
to see which equation works.
b works.
The usual way to do it is to find the equation of the circle
standard form of a circle is (x-h)²+(y-k)²=r², (h,k) are the coordinates of the center, r is the radius.
in this case, the center is (-2,1), so (x+2)²+(y-1)²=r²
the given point (-4,1) is for you to find r: (-4+2)²+(1-1)²=r², r=2
so the equation is (x+2)²+(y-1)²=2²
expand it: x²+4x+4+y²-2y+1=4
x²+y²+4x-2y+1=0, which is answer b.
Answer:
The pharmacy should give Marilyn 135 tablets to fill the isoniazid for 45 days
Step-by-step explanation:
Marilyn has to take isoniazid 100 milligrams tablet 3 times a day which means three tablets a day.
The pharmacy has to provide the tablets for 45 days
So,
Total tablets that will be provided by the pharmacy are:
45*3 = 135 tablets ..
