Answer:
B?
Step-by-step explanation:
Ex: 3 4/5 = 3 x 5 + 4= 19/5
The next number should be 22. So this is false
Answer:
29 ft x 58 ft
Step-by-step explanation:
Let x be the length of each side perpendicular to the wall, and y be the length of the side parallel to the wall.
The amount of wire available is:

The area of the region is:

The value of 'x' for which the derivate of the area function is zero will yield the maximum area:

The value of y is:

The dimensions of the region with the largest area are 29 ft x 58 ft.
Answer:
4r + 4(r + 3) = 68
r = 7 miles per hour
r + 3 = 10 miles per hour
Step-by-step explanation:
distance = rate * time
a)
4r + 4(r + 3) = 68
Distribute
4r + 4r + 12 = 68
8r + 12 = 68
8r = 56
r = 7 miles per hour
r + 3 = 10 miles per hour