Speed is decreasing by 5 and position is -1
Times the corner and bases
There are 7 numbers between 1 and 50 that are divisible by 7 so the answer is 7
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Find the volume of one brick by multiplying the length by the height by the width to find the volume for one brick.
Then multiply the volume for one brick by the number of bricks they want to make to find the total amount of concrete needed.
Volume of brick: 5 x 4 x 2 = 40 cm^3
Total concrete needed: 1600 x 40 = 64,000 cm^3