Suppose that, for a certain exam, a teacher grades on a curve according to the number line shown below. It is known that the grades follow a normal distribution with a mean of 70 and a standard deviation of 7. There are 45 students in the class. How many students should receive an A? Please, round your answer to the nearest integer. 
Definitions:
Q4: Find the number of full lengths of
Q15: The median of a set of numbers
Q39: The breaking strength (in pounds) of a
Q84: In a game of dice, a player
Q111: Let <span class="ql-formula" data-value="\begin{array} {
Q161: Graph the first-degree inequality in two
Q167: Find the variance and the standard
Q190: Find the price that maximizes the profit
Q208: Every parabola opens upward.
Q247: Find the functional value <span