For this case we have the following equation:
The variables are:
t: time in hours
d (t): distance traveled in miles.
We evaluate the distance traveled after 4 hours.
So we have that for t = 4:
Answer:
d (4) = 68
This means that after 4 hours Joanna cycled for 68 miles total
Answer:A
Step-by-step explanation:
the y-intercept is when x-axis is 0 and that means that hours of jogging is 0 and the y-axis is 1 minunte
You have two points
(12,2200) and (10,3000) You have enough information to set up an equation.
x1 = 12
x2 = 10
y1 = 2200
y2 = 3000
The slope = (y2 - y1)/ (x2 - x1)
The slope = (3000 - 2200) / (10 - 12)
Slope = 800 / - 2
slope = - 400
So far what you have is y = - 400x + b
To get b just use one of the points.
(10,3000)
y = - 400x + b
3000 = -400*10 + b
3000 = - 4000 + b Add 4000 to both sides.
3000 + 4000 = b
b = 7000
Answer y = - 400x + 7000
What happens if you use (12,2200)
y = -400*12+ 7000
y = - 4800 + 7000
y = 2200 As it should.
Answer:
23 children and 9 adults
p <= 70/9
Step-by-step explanation:
Let x = # of adults and y = # of children. The number of children is 5 more than twice the number of adults, so x = 2y + 5. The total cost of entrance is $6525, so 225x + 150y = 6525.
x = 2y + 5
225x + 150y = 6525
x - 2y = 5
225x + 150y = 6525
75x - 150y = 375
225x + 150y = 6525
300x = 6900
x = 23
x = 2y + 5
23 = 2y + 5
18 = 2y
y = 9
225p + 3750 <= 5500
225p <= 1750
p <= 70/9