If x = 2 is a solution to the system shown below, then what must be value of b? y = 7x + 4
y = 3x + b

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(1) 5

(2) -4

(3) -17

(4) 12

thank you in advance for anyone that helps answer this :))

What is x and y intercepts for y=x+7

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If the class creates a histogram of the data in table, how many students are in the range 12cm to 13.9 cm