April and alex are saving money to buy new phones. each friend starts with some money and saves a specific amount each week. alex wrote an equation to show the total, y, she has saved at the end of each week, x. y = 20x + 125april made a graph to show the total he has saved at the end of each week. (graph as shown)compare the amount that each friend has when both friends start saving. select the correct answer from the answers below to complete the statement. alex starts a. 1b. 20c. 25d. 100e. 125 april starts f. 1g. 20h. 25i. 100j. 125 answer asap

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?