Answer:
he's running 4/19 miles per minute or 12.6 miles per hour
Step-by-step explanation:
he is running 3 miles north, 4 miles east, and 5 miles southwest, a total of 12 miles
d = rt
12 = 57r
r = 12/57 or 4/19 (simplest form)
this is 4/19 miles per minute, multiply by 60 and it's about 12.6 miles per hour

The variables are proportional. The constant of proportionality is 2/7.
Note slope intercept equation is
y = mx + b
where
m = slope
b = y-intercept
V = (1/3) π r² t
= (1/3) π (10 cm)². 16 cm
= (1/3) π (100 cm²). 16 cm
= (1/3) π (1600 cm³)
= (1600π)÷3 cm³ (B)
B is correct 12 for find the y-intercept of 2x-y=-6
49-25=24
24+21=45
456÷45=10.3333333333333
Marvin will have the car for about 10 days.