Answer: 64
Step-by-step explanation: 4 to the 3rd means 4 times itself three times.
So we have 4 · 4 · 4 which is 64.
Answer:
2
Step-by-step explanation:

because 
So,

QR =12 because you set up a proportion 21/14=x/8 then cross multiply and get 14x=168 then you divide and get 12
Answer:
C x=6
Step-by-step explanation:
4x-5=19
+5 on both sides
4x=24
divide both sides by 4
x=6
The answer is False
Explanation: If a graph is proportional, it means that but the x coordinate and the y coordinate have the same rate of change