A cell phone plan cost $100 to start then there is a 40 charge each month. a. what is the total cost (start up fee and monthly charge) to use the cell phone plan for one month?
b. what is the total cost for X months?
c. graph the cost of the cell phone plan over a period of two years using months as the units of time be sure to label your axis and scale then by labeling each grid line with the number.
d. is there a proportional relationship between time in the cost of the cell phone plan ?explain how you know.

Drag and drop the answers into the boxes to complete this informal argument explaining how to derive the formula for the volume of a cone. since the volume of a cone is part of the volume of a cylinder with the same base and height, find the volume of a cylinder first. the base of a cylinder is a circle. the area of the base of a cylinder is , where r represents the radius. the volume of a cylinder can be described as slices of the base stacked upon each other. so, the volume of the cylinder can be found by multiplying the area of the circle by the height h of the cylinder. the volume of a cone is of the volume of a cylinder. therefore, the formula for the volume of a cone is 1/3 1/2 1/3πr^2h 1/2πr^2h πr^2h πr^2

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Which expression converts 45 degree to radians