What unit of measurement do these sketches use

In the triangles, tr = ge and sr = fe. if = 3.2 ft, which is a possible measure of ? 1.6 ft 3.0 ft 3.2 ft 4.0 ft

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red