I am in 9th grade, if you have 889,865x999,786 what doe it equal also yes i am not in virtual school and teacher will not let me use a calculatar

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints