Which expression is equivalent to −1/ 12x−1 /3?

112(−x−13)

112(−x−4)

112(−x−14)

112(−x+4)

Step-by-step explanation:

the expression we have is:

To find an equivalent expression, it would be helpful to express 1/3 so that it has a 12 in the denominator:

so we substitute this:

and now we have 1/12 in both terms :

so we can factor it (we take it out of each term: in the first we are left with -x and in the second with -4):

the equivalent expression is:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24