Ross Labs needs to make 3200 gallons of 42% acid solution. They have 36% acid solution and 54% solution. How many gallons of each type are needed to make 3200 gallons of the 42% acid solution?

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

With number 11 ( show how you got the answer)