A family drives an average speed of 60 miles per hour on a trip from Pensacola to Orlando. Part A
Write an inequality to show how many hours, h, the family must drive to travel the 438 miles to Orlando.
Part B
For how many hours must the family drive to travel the 438 miles?

7 3/10 hours or 7.3 hours

Step-by-step explanation:

We need to find two numbers that are multiples of 60 and close to 438

60*7 = 420

60*8 = 480

7<h<8

B. 438/60 = 7 18/60 = 7 3/10

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18