Given:
f(x)=2x-1
g(x)=x+1
h(x)=2x^2+x-1

Step-by-step explanation:

(a)

f(-2)

2(-2)-1

-4-1

-5

(b)

h(3b)

2(3b)²+3b-1

2(9b²)+3b-1

18b²+3b-1

9

(c)

x+1 - 3(2x-1)-2(2x²+x-1)

x+1 - 6x+3-4x²-2x+2

-4x²-7x+6

(d)

(f-g)(-2)

2x-1-(x+1)

2x -1 - x - 1

x - 2

-2 - 2

-4

(e)

((2x²+x-1)(x+1))

2x³+2x²+x²+x-x-1

2x³+3x²-1

2^y = ln 5, or   y(ln 2) = ln 5.   solving for y,   y = (ln 5) / (ln 2).   y=5

step-by-step explanation:

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.