Posted by franklin on .
The volume of a rectangular slab of concrete needs to exceed 72 cu. ft. If the length is 12 feet and the width is 8 feet, how thick does the concrete slab need to be?

algebra 
bobpursley,
12*8*thickness>72

algebra 
franklin,
would I replace the word "thickness" with 96? 12*8*96 > 72?

algebra 
Ms. Sue,
(12 * 8)t = 72
96t = 72
t = 72/96
t = 0.75 inches