Chris has a cell phone with a flat monthly fee of $50 for unlimited calls. He pays $0.25 for each text message. Write a function that describes the total cost for one month.

y = .25x + 50

Step-by-step explanation:

Let's use the slope-intercept equation for this problem:

y = mx + b

where m is the slope and b is the y-intercept

In this problem, m is the amount Chris pays per text and b is the flat rate.

m = price per text = .25

b = flat monthly fee = 50

Let's plug these values into the equation:

y = mx + b

y = .25x + 50

where y is the total cost for a month and x is the number of text messages

Therefore, the function is y = .25x + 50

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

step-by-step explanation: