B and E are the correct choices
Answer:
11a. 15
Step-by-step explanation:
11a. Area of square: L * L

L = 15
Answer:
29274
Step-by-step explanation:
Because 17*14=238 and 238*123=29274
The answer would be 280 as a tens bar is worth ten. 28x10=280
Answer:
cos 4x
Step-by-step explanation:
Because this graph begins at (0, 1), we immediately suspect that it's a cosine function. Additionally, since there are 4 cycles of this cosine function between x = 0 and x = 2pi, we suspect horizontal compression:
cos 4x