Which expression has the greatest value? A: 5 - (-7)
B: 5 - 7
C: -5 + 7
D: -5 + (-7)

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

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