Answer:
4 x (7-x)
Step-by-step explanation:
4 times (multiply) the difference (subtraction) of 7 and a number (seeing as how you don't know that number use a variable, x)
The volume of the sphere is 
Explanation:
Given that the diameter of the toy ball is 12.5 inches
We need to determine the volume of the toy ball.
The radius of the toy ball is given by



Thus, the radius of the toy ball is 6.25 in
The volume of the sphere can be determined using the formula,

Substituting the values, we get,

Multiplying, we get,

Substituting
, we have,

Simplifying, we get,

Thus, the volume of the sphere is 
Answer:
I am pretty sure it is 300 (B)
btw nice Samsung laptop
Step-by-step explanation:
Answer:
it would be a positive number
Step-by-step explanation:
this is because you cant have a negative number of bikers.