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2x+3y=12 x-y=6 solve the following system equations

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x