Pplz hury What is missing from the frequency chart below? A. the tallies are missing
B. the title is missing
C. the total is missing
D. there is nothing missing

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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.