To figure out what expression we can write to represent the situation, we need to turn the word problem into mathematical functions.
The word "more" means we are adding. The word "times" means we are multiplying.
So the expression should be 4x+10 where x represents the minutes Brianna spent studied.
First calculate the area of the shaded region by considering the U-shaped bed as formed by three rectangles, as follow:
where the lengths of the sides of the rectangles corresponds with the dimensions of the U-shaped bed.
Then, for the area of the figure, use the formula for the area of a rectangle, for all three rectangles, as follow:
A = 5*18 + 3*20 + 5*18
A = 90 + 60 + 90
A = 240
Then, the area is 240 in^2
Next, convert the previous result to yd^2. Use the equivalence 1 yd = 36 in:

Now, to find the volume convert 30 in to yards:

Finally, multiply the previous result by the area of the figure:
Answer:
90 meters
Step-by-step explanation:
Volume = length x width x height
V = 6 x 5 x 3
V = 90
Answer:
120000000
Step-by-step explanation: