Answer:
d (w) = 0.1w² – w+ 5
Step-by-step explanation:
d(w) = c(w) - a(w)
= -0.3w²+2w+13 -(-0.4w²+3w+8)
= -0.3w²+0.4w²+2w-3w+13-8
= 0.1w²-w+5
The answer is C. hope this helps.
Answer:
First you have to find out how many students were asked.
Rock 20
Hip-hop 40
Country 30
Aiden asked to 90 students
Step-by-step explanation:
It’s a Rule of 3:
If in a group of 90 students 20 chose rock. In a group of 360, How many students will choose rock?
90s - 20rock
360- ?
360(20)/90 = 80
Then do the same thing with country.
90s - 30country
360s- ?
360(30)/90 = 120
The total of country and rock will be:
200 students
