Answer:
B
explanation:
7x + 4 means you are adding 7 times x and four
220=A+S (adult plus student)
s=220-a
2.50a+1.50s=465
1.50s=-2.50a+465
s=-1.67a+310
then set those equal to each other
220-a=-1.67a+310
220=-.67a+310
-90=-.67a
.67a=90
a=60
then put a back into the first equation
220=S+A
220=s+60
s=160
a=60, s=160
125x + 55 < 555
Okay, subtract 55 from both sides.
125x < 500
Divide by 125 to isolate the x.
125x < 500
/125 /125
x < 4
The school can have the DJ for less than 4 hours, or for 4 hours. Hope that helps.
Answer:
y = 1/3x + 10/3
Step-by-step explanation:
Slope: 1/3
Point (-4,2)
b = 2 - (1/3)(-4) = 10/3
