Algebra II Converting Summation Notation to Expanded Form (15 pts) 0 + 3 + 8 + 15 this series is equal to [blank]

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Given abc find the values of x and y. in your final answer, include all of your calculations.