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The Alexander family and the Anderson family each used their sprinklers last summer. The Alexander family's sprinkler was used for 30 hours. The Anderson family's sprinkler was used for 20 hours. There was a combined total output of 1450L of water. What was the water output rate for each sprinkler if the sum of the two rates was 55L per hour?

7x+8y=-18, 4x-9y=-3 solve the system of equations

Find the value of the variable and the length of each secant segment.

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.