Arock is thrown in the air from the edge of a seaside cliff. its height in feet is represented by f(x) = –16(x2 – 3x – 18), where x is the number of seconds since the rock was thrown. the height of the rock is 0 feet when it hits the water. how long does it take the rock to hit the water? how many seconds?

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?

Proving the congruent supplements theorem

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.