Digital ACT Math Practice Question #1405
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
S = a / (1 - r) = 18 / (5/3) = 54/5 = 10.8.
A_1 = 18, r = -12/18 = -2/3. S = a_1 / (1 - r) = 18 / (1 - (-2/3)) = 18 / (5/3) = 54/5....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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