The length I (in inches) of a standard nail can be modeled by I=54d^3/2, where d is the diameter (in inches) of the nail. What is the diameter of a standard nail that is 3 inches long? Round your answer to the nearest hundredth.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Sara has been reading about different types of financial grants, including federal pell grants, academic competitiveness grants, smart grants, and teach grants. which statement about these grants is true? filling out a fafsa will not her apply for these grants. she will not have to pay back any funds she receives from these grants. these grants only go to students with less than a 3.0 gpa. she will have to pay back all the funds she receives from these grants.

Can someone me with my math problem pls my teacher is on my back about this