Todd and Jeff are throwing rocks and create equations to track how high (feet) the rock travels, as well as how long in seconds it takes the rock to hit the ground. Todd creates the equation t(x) = -x2 + 5x + 2.5, to track his rock. Jeff creates the equation j(x) = -x2 + 4x + 4, to track his rock.  (Hint: x = 0 for the starting point.) What is the starting point of Todd and Jeff’s rocks?

Q: -1

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