When using fraction strips how do you know that two fractions are equivalent

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume