Factory workers will drain two fuel tanks for cleaning and repairs. Tank 1 contains 500 gallons of fuel and drains at a rate of 20 gallons per minute. Tank 2 contains 300 gallons of fuel and drains at a rate of 12 gallons per minute. Which of the following statements is a reasonable conclusion? А After draining for 15 minutes, tank 1 has twice as much fuel as tank 2. B After draining for 20 minutes, tank 2 has 40 gallons more fuel than tank 1. C Tank 1 drains 8 times faster than tank 2. Both tanks are empty after draining for 25 minutes.

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

not sure but it may be b, as i said i'm not sure.