Un barco divisa desde el orizonte un faro que se encuentra en la costa, y observa que su luz está girando para mostrar hasta donde se puede acercar a la costa Un marino observa que durante tres cuartos de hora la luz hizo 35 giros completos al periodo y dar frecuencia en metros por segundo con que oscila la lámpara de el faro

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

kbmflmklbhml; bmlzb; bdhzz

step-by-step explanation:

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)