Find the value of x. Step by step solution please.

What does x = in this equation x+3+2x=x+5

: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?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6