For a big cleaning job, Tyler wants to mix some ammonia-based cleaners to get a certain concentration of ammonia. He has 4 gallons of cleaner that is 18% ammonia. He also has a
large supply of cleaner that contains 8% ammonia. How many gallons of the 8%-ammonia
cleaner does Tyler need to add to the 18% ummonia cleaner to obtain a batch that contains
15% ammonia?
Write your answer as a whole number or as a decimal rounded to the nearest tenth.
gallons

answer: #1 ads up by 8 and i don't know #2

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

answer: plz mark me brainliest

7 hours, 0 minutes, 0 seconds

or:  

0.04

total weeks

or:  

0.29

total days

or:  

7.00

total hours

or:  

420.00

total minutes

or:  

25,200.00

total seconds

step-by-step explanation: