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

Select true or false to tell whether the following conditional p q is true or false. use the truth table if needed. if a week has seven days, then a year has twenty months.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Which expression is rational? 6. , square root two, square root 14, square root 49