Chose the equation below that represents the line that passes through the point (1,-4) with a slope of 1/2

a) y-4=1/2(x-1)
b) y+4=2(x-1)
c) y+4=1/2(x-1)
d) y-4=2(x+1)

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?