Express the following using summation notation 1. Yı + y2+ Y3+ y4+ Ys+ yo
2. (x,-5) + (x2-5) + (x3-5) + (x4-5) + (x5-5)
3. x + xy + xgt x7

)a smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

Me find the value of x each figure.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?