7. How tall is the flagpole? 25.7 feet 18.9 feet 9.6 feet 10 feet

correction so 1] y = 3x + 7

// Plug this in for variable y in equation [2]

[2] 5x + 2•(3x+7) = 3

[2] 11x = -11

// Solve equation [2] for the variable x

[2] 11x = - 11

[2] x = - 1

// By now we know this much :

x = -1

y = 3x+7

// Use the x value to solve for y

y = 3(-1)+7 = 4

Step-by-step explanation:

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4