Which ordered pair is a solution of y = x + 4

(0,0)
(5,54)
(7,28)
(9,13)

!

(9,13)

Step-by-step explanation:

A solution to an equation is a point (x,y) which makes the equation true.

y = x + 4

Substitute each point to determine if a solution.

(0,0) > 0 = 4 No

(5, 54) > 54 = 9 No

(7,28) > 28 = 11 No

(9,13) > 13 = 13 YES

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