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Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.