What is the area of circle E? (Use 3.14
for y.)

Area of circle is πr^2

Here,

• π = 3.14

• d = 10

• so, r = d/2 = 10/2 = 5

substituting the values in the formula,

Area = 3.14 x 5 x 5

Area = 3.14 x 25

Area = 78.5 m^2

Hence, option (c) is correct.

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)