The answer I got was -3x^(3)+6
Answer:
y=x÷20x19
Step-by-step explanation:
x÷20=5% then 5%x19=95% basically 5% off
let X be number of students
and y be total cost
when 30 students (30,X)where at the gym it's costs 200 (y,200)
=that is (X,y)=(30,200)
when 70 students where at the gym
=(X,y)= (70,330)
now we find the slope
M=y2-y1/x2-x1
= 330-200/70-30
= 100/40
= 2.5=3
now
Y=Mx+b
Y=2x+b
we need to find the value of b
so,we substrate for X and Y
X=30,200
200=2(30)+b
re-arrange
B+60=200
B=200-60
=140
y=2x+140
For the other questions, I can look at the equation I got. The y-intercept (b value) is $200. That means that we are adding $200 on to the price all the time. That's the price for the empty bus. The 2x means to multiply the number of people by two and add this to the $120. So each person is $2.
hope it's helpful
and please I really need brainliest, thanks
1. Ratio- 91:21
2. Reduce- the common factor is 7
3. Answer- 13:3
Answer:
B, C, D and F
Step-by-step explanation:
The product √16 x √ 9 is 12.
C: 6 x 2 is equal to 12.
D: Square root of 144 is 12.
F: The product of all four numbers is 12.
