Which ordered pair is the best estimate for the solution of the system of equations? y = -3/4x - 2 y = x + 6 a: (-4.25,1.5) b: (-4.5,1.5) c: (-4.5,1.75) d: (-4.75,1.75)

none of the given options is right.

step-by-step explanation:

y = -3/4x - 2

y = x + 6

are the given equations.

since both the equations are of the form y = we can eliminate y easily.

x+6 = -3x/4-2

multiply by 4

4x+24 =-3x-8

7x = -8-24 = -32

x = -32/7

y =x+6 = -32/7+6 = 10/7

answer is (-32/7, 10/7)

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet