Answer:

Step-by-step explanation:
Given
Options (a) to (d)
Required
Which represents an arrow pointing left
When an arrow points left on an inequality graph, the inequality is either of the following:
or 
From the given options (a) to (d), only
fits the above description.
Other options illustrate an arrow pointing to the right
To further explain this;
Looking at (b), we have:

This is rewritten as:
--- the same form as (c) and (d)
Its 8:00, because four 15 minutes is 9:00, so when you go back four 15 minutes, its 8:00
Answer:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
7.75 × 10^−3
The answer is 9 because if you find the two side lengths and find the area of the square then divide it by 2 it equals 9