For every 4 balloon he buys he pays $5
what would be the cost for just one ballon

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Anyone know? will mark brainliest if you're correct!