2. A jar contains a quarters and d dimes. There
are 7 coins in the jar, and the total value of
the coins is $1.00. Which system of equations
can be used to find out how many of each
type of coin the jar hasa
0, 0.100 +0.250 = 1.00
d=7
b. 250 + 100 =1
I at d=7
C. 0.259 + 0.100 = 1.00
atd=7
d. 0.259 + 0.100 = 7,00
9+d=1

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.