Answer:
Step-by-step explanation:
let speed of Stephen=x mph
speed of Diana=x+4
then
6x+6(x+4)=276
divide by 6
x+x+4=276/6=46
2x=46-4=42
x=42/2=21
Stephen is traveling at 21 mph.
Diana is traveling at 21+4=25 mph.
B) only (-3 , 3)
y = -3x - 6
(-4,4) y = -3 x (-4) - 6 = 12 - 6 = 6 .... incorrect
(-3,3) y = (-3) x (-3) - 6 = 9 - 6 = 3 ..... correct
2 litres of water. A