Combine like terms. What is a simpler form of each expression? 3c - 5d - c + 3d
A. -2c+2d
B. 2c-2d
C. 2c+2d
D. -2c-2d

What is the value of the expression below? (81^2)^1/8

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Write each of the following numerals in base 10. for base twelve, t and e represent the face values ten and eleven, respectively. 114 base 5 89t base 12