Marilyn has 24 hair ribbons. 9 of her ribbons are red. What percent of her hair ribbons are red?
A. 30%
B. 37.5%
C. 25%
D. 40%

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?