The inequality to represent that would be 9x + 15 ≤ 10x + 24
3/4 of the total students = 1230...
3/4x = 1230
x = 1230 * 4/3
x = 4920/3
x = 1640 <=== total students
Given:
A number line from -10 to 10 with 20 tick marks.
Point D is 1 tick mark to the left of 5.
To find:
The integer value that represents point D.
Solution:
A number line from -10 to 10 with 20 tick marks. It means, each mark represents the integer values from -10 to 10.
We know that, as we move towards left on a number line the value decreases and as we move towards right the value increases.
Point D is 1 tick mark to the left of 5. It means, point D represents the integer value which is 1 less than 5.

Therefore, point D represents the integer 4.
If an ostrich can run 50 miles in one hour then he can run 12.5 miles in 15 minutes. 15 minutes is 1/4 of an hour. Multiply 50 by 0.25 = 15.
The first one is correct because the angle on the opposite side is the same, and the second one is correct too because it's the same points. So you can pick either or.