The partially filled contingency table gives the frequencies of the data on age (in years) and sex from the residents of a retirement home.

60-69
70-79
over 79
total
male
15
4
5

female
5
7
4

total

what is the relative frequency for persons in the age group 60-69 ?
a.2/3

b.1/4

c.1/2

d.1/3

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

What is the range? can’t seem to find it out

Which graph represents the equation y =4x