Triangular prism has how many edges, vertices, faces​

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.