Tim used 15 boards for each crate that he built. Which of the following expressions represents the total number of boards he would need to make n crates? A.15-n
B. n+15
C.15n
D. n/15
PLEASE HELPP​

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Which linear inequality is represented by the graph? !

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?