Asaappp pls me with 9 a and b , also pls show work for b ( ) < 3

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.