If a parabola has a directrix of x = 3 and a vertex of (-2, 4), what are the coordinates of the focus? *
A(-7,4)
B(8,4)
C(1,4)
D(3,2)
E(0.5,4)

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?