Aperson leaves home at 8: 00 a. m. and drives to a destination at a rate of 40 mph. the person returns at a rate of 25 mph and arrives at 2: 30 p. m. if x represents how far it is to the destination, then which of the following expressions represents the amount of time to make the return trip? .

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

Browning labs is testing a new growth inhibitor for a certain type of bacteria. the bacteria naturally grows exponentially each hour at a rate of 6.2%. the researchers know that the inhibitor will make the growth rate of the bacteria less than or equal to its natural growth rate. the sample currently contains 100 bacteria.the container holding the sample can hold only 300 bacteria, after which the sample will no longer grow. however, the researchers are increasing the size of the container at a constant rate allowing the container to hold 100 more bacteria each hour. they would like to determine the possible number of bacteria in the container over time.create a system of inequalities to model the situation above, and use it to determine how many of the solutions are viable.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?