1 pound of rice costs $3.45
1.2 pounds of rice costs x
Set up the proportion
1 / 1.2 = 3.45 / x Cross Multiply
x = 1.2 * 3.45 Combine
x = $4.14 Answer
The altitude might be another name for a height of a pyramid, lol, hope this helps
The vertex is (2,-1). Thats your answer.