B. they are directly proportional because she keeps taking 3 at a time to his 1 at a time.
2 to the second power is 2 x 2 (4) , and 2 to the 3rd power is 2 x 2 x 2 (8)
Answer:
1hr25m+45m=2hr10min
125+45=170
D.) 170min
All you had to do was add both of the numbers together.
5(x + y) - 3(x - y)
5x + 5y - 3x + 3y
5x - 3x + 5y + 3y
2x + 8y
5(x + y) - 3(x - y) = 2x + 8y
You can use a table like this x -1 0 1 2
y 0 2 4 6
and a T table
