Please i just need this

Somone me i want to know what 18 hours out of 24 hours in a fraction

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30