Step-by-step explanation:

Now for another

Hope it will help :)❤
Answer:
Option A.
Step-by-step explanation:
In the given graph there are four intervals in which we have to find the nature of function.
1). In the interval (-∞, -0.7)
f(x) < 0
Because for every value of x, value of the function is negative.
2). In the interval (-0.7, 0.76)
f(x) > 0
For each value of x, value of the function is greater than 0.
3). In the interval (0.76, 2.5)
f(x) < 0
Because in this interval value of the function is negative.
4). Interval (2.5, ∞)
f(x) > 0
Because value of the function for every value of x, is greater than 0.
When we compile all four properties Option A. comes out to be the right option.
You do cross multiplying so 25/100 because a 100 is the most of a percent you can get so it that percent over a 100=x/25,000. there's a x because you don't know what the number on top of the 25,000 is.Now do cross multiplying, 25 times 25,000 divided by 100 is 6250
Answer:
U first need to find out the total number of people
22+28
50
and since they are asking only for boys we need to put the number of boys on the numerator and the total number of people at the denominator
22/50
And now to make it into % we need to ALWAYS multiply the fraction by 100
22/50 x 100
44%
Hope it helps