Answer:
b is the answer
Step-by-step explanation:
if you look at the graph chart you will notice that b lines up with negative 4 and positive 2
Answer:
C- 10
Step-by-step explanation:
6x-3*y=15 not sure but I graphed it and that's the intercept
It will take 15 weeks for both Jon and Matt to weigh the same.
Given:
Jon : 148 lbs and gain 2lbs a week
Matt : 193 lbs and lose 1lb a week
Find the number of weeks until they both weigh the same.
Jon = Matt
148 + 2w = 193 - 1w
2w + 1w = 193 - 148
3w = 45
w = 45/3
w = 15
To check:
148 + 2(15) = 193 - 1(15)
148 + 30 = 193 - 15
178 = 178
First plane
t = 2 hours.
r = r
Second plane
t = 1.5 hours
(30 minutes = 1/2 hour. the second plain has been in the air 2 - 1/2 hour = 1.5 hours. )
r = r + 30
Equation
2 * r + 1.5(r + 50) = 2000
2r + 1.5r + 75 = 2000
3.5r = 2000 - 75
3.5r = 1925
r = 1925 / 3.5
r = 550
the first plane was going 550 mph
the second plan was going 600 mph
