The Charlotte Motor Speedway determines their pricing as follows: r(x)=200[(x-90)]+k
Note that x represents the number of minutes on the track and that r(x) represents the total price in dollars.
Cole Trickle and Rowdy Burns are drivers that have rented the track.
- Cole's team spent $1000 for the time that he drove.
- Rowdy's team spent $800 for the 70 minutes that he drove.
If Cole and Rowdy had been able to combine their minute's total, they would have only paid a total of $1400.
What is the range of minutes (x) that Cole could have driven at the racetrack?

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

answer is because 4×10=40

and 98×4= is 392

40,392