Use the variable h, to write an expression representing the difference of three times a number and two

3h - 2

Step-by-step explanation:

An expression is a mathematical phrase using variables, such as 'h', and operations, such as addition, subtraction or multiplication.  An expression does not include the equal sign (=).

The problem asks you to use the variable 'h' which we can substitute for 'a number' in the verbal description.  Also, 'difference' is a word used for the operation of subtraction.  'Times' is a word that we use for the operation of multiplication.  So, 'three times a number' = 3h.  'The difference of three times a number and two'  = 3h  - 2.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere