All sweaters at a store are on sale at a 20% discount. What would be the sale price of a sweater regularly priced $402 State what strategy and tool you will use to answer the question, explain your choice, and then find the answer.

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10