Answer:
Option B. y = cosx + 1
Step-by-step explanation:
To understand the given graph we will note down it's features as below.
1). Since it's a periodic function and y value of graph is maximum at x=0 so its a cosine function.
2). Vertical shift of the graph is 1 means y=0 is the mid line of the graph.
3). Amplitude of the graph is = (2-0)/2 = 1
4). Phase shift of the given graph = 0
The graph satisfying all properties is option B. y = cosx + 1
Answer:
otterbox costs $95; beats costs $210
Step-by-step explanation:
x = otterbox y = beats
4x + 2y = 800 y = 2x + 20
4x + 2(2x + 20) = 800
4x + 4x +40 = 800
8x + 40 = 800
8x = 800 - 40
8x = 760
x = 760 / 8
x = 95 Otterbox costs $95 each
4x + 2y = 800
4(95) + 2y = 800
380 + 2y = 800
2y = 800 - 380
2y = 420
y = 420 / 2
y = 210 Beats costs $210
4(95) + 2(210) = 800
380 + 420 = 800
