If Jacob paints 1/5 of a wall in 1/10 of an hour, what is his unit rate?

2 pieces of wall/1 hour

Step-by-step explanation:

1) since time is an independant variable it will be the denominator

so 1/5÷1/10

when dividing fractions remember that the sign changes to multiplication and the second fraction reciprocates (turns upside down)

so

1/5*10/1=10/5

Jacob paints 10/5ths of the wall (2), in an hour

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.

-2/