On July 6 in San Diego, the temperature at 7 a. m. was 65 °F . Later that same day at 6 p. m., the temperature was 98 °F . Find the average rate of change of the temperature in degrees per hour.

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.

x=-2

step-by-step explanation:

i began by flipping the problem to give me x= on the left (keeps it clearer for me).   so my problem simply became 10x-3=4x-6.  

1)   subtract 4x from the right side, which equals 0.   you do the same to the left of the equal as the right; therefore, subtract 4x from 10x, leaving 6x on the left.

              10x-3=4x-6   :   4x-4x on the right leaves only the -6        

2)             6x-3= 0-6 :    

                6x+3=   -6

3) divide