Which of the following rates is proportional to $2.50 for 5 cans? A.$4.50 for 9 cans
B.$1.50 for 1 can
C.$4.00 for 7 cans
D.$2.00 for 3 cans

The answer is A. $4.50 for 9 cans

Step-by-step explanation:

Divide 2.50 by 5 and you get $0.50 a can

Multiply $0.50 by each of your answers

A. 0.50 times 9 = 4.50

B. 0.50 times 1 = 0.50

C. 0.50 times 7 = 3.50

D. 0.50 times = 1.50

As you can see A. is the only one that matches

I hope this helps

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,