Answer:
a=(-7)
b=1
c=4
Step-by-step explanation:
0=(c)+(a)x²+(b)x
First convert the hours to minutes



now change the 900mins to seconds
as


Answer:
16
Step-by-step explanation:
1/2x + 8 = 16
1/2x = 16 - 8
1/2x = 8
x = 8 * 2
x = 16 <== his weekly allowance
N/8=15/4
4n=120
n=30
20/t=2.5/6
2.5t=120
25t=1200
t=48
6/11=.12/z
6z=1.32
z=.22
15/24=x/10
24x=150
x=75/12
x=25/4