Please only do the ones in the pink highlight Hope everyone is doing ok in quarantine

Somone me i want to know what 18 hours out of 24 hours in a fraction

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?

Predict which statements are true about the intervals of the continuous function. check all that apply