A boat travels 160 miles per hour. What is the speed in miles per minute?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Ithink i know it but i want to be sure so can you me out ?