PLSSS HELP GIVING BRAINLIEST What is the circumference of a circle with a diameter of 7 feet? Use 3.14 for d = 7 ft O A. 21.98 ft O B. 38.47 ft O c. 43.96 ft O D. 10.99 ft​

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

What is the product? a-3/15a × 5/a-3