Two cars traveled equal distances in different amounts of time. car a traveled the distance in 2.4 h, and car b traveled the distance in 4 h. car a traveled 22 mph faster than car b. how fast did car a travel? (the formula r⋅t=d , where r is the rate of speed, t is the time, and d is the distance can be used.)

Just took the test the answer is 60mph. The guy that i listened to on here told be the wrong answer

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".