Which rule of inference is exemplified by the argument (r → s) \ (r → s) ν t? a) conjunction b) modus ponens c) addition d) simplification

The only way to identify an intercept is as an ordered pair. true false

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?