There are 750 spectators in the stadium, of which 420 are women and the rest are men. What percent of the spectators are woman?

56%

Step-by-step explanation:

Let x = The percentage of female spectators

420/750 = x/100

42000 = 750x

42000/750 = x

56 = x

y = 4x + 17

Explanation:
The general form of the linear equation is:
y = mx + c
where:
m is the slope
c is the y-intercept

1- getting the slope:
For two lines to be perpendicular, the product of their slopes should be -1.
The given line : y = -1/4 x + 3 has slope = -1/4
This means that the slope of the line we are looking for is 4
The equation of the line now is:
y = 4x + c

2- getting the y-intercept:
To get the value of the c, we will simply use the given point, substitute in the equation and solve for c as follows:
y = 4x + c
5 = 4(-3) + c
5 = -12 + c
c = 17

Based on the above, the equation of the line is:
y = 4x + 17

Hope this helps :)