The total cost of gasoline varies directly with the number of gallons purchased. kathy pays $17.93 for 11
gallons of gasoline. which equation shows the relationship between the total cost of gasoline, c, and the
number of gallons purchased, n?
a. n = 17.93c
b. c = 17.98n
c. n = 1.63c
d. c = 1.63n

The answer is a 5/20 because if u add all of the marbles there are 20 and there are 5 red marbles so 5/20 is the answer mark as brainliest

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.