-2|5x-1|-3=11 and -2|5x-1|-3=-11

Answer : The values of x are and 1.

Step-by-step explanation :

The given equation is:

The term -3 is moved or added to the right hand side.

The term -2 is divided to the right hand side.

Clear the absolute-value bars by splitting the equation into two cases. One for the positive case and the other for the negative case.

Negative case :

Positive case :

Now solve both the cases.

Negative case :

and,

Positive case :

Therefore, the values of x are and 1.

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

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.