The answer from my calculations is 32
Answer:
c
Step-by-step explanation:
<span>10 +- sqrt( 100 + 60 ) / 6
A is the correct answer</span>
Try this solution:
1. the standart form of the circle is: (x-x₀)²+(y-y₀)²=r², where point (x₀;y₀) - the cetre of the given circle, r - radius of the given circle.
2. Using r=7 and coordinates of the centre (0;0) it is possible to make up the required equation:
(x-0)²+(y-0)²=7²;
x²+y²=49.
F(x) = -7x + 5x² + 10
x = -2
substitute the x by its value
f(-2) = -7(-2) + 5(-2)² + 10
f(-2) = 14 + 5(4) + 10
f(-2) = 14 + 20 + 10
f(-2) = 44
