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Formula: A=12bhA=\tfrac{1}{2}bh. Substituting: 24=12(8)(h)24=\tfrac{1}{2}(8)(h). Simplify: 24=4h24=4h. Solve: h=6h=6. Correct answer: C. Other options reflect arithmetic errors. ACT Math often requires substituting into geometry formulas.

When multiplying like bases, add exponents: 3+4=73+4=7. So result is x7x^7. Choice A is correct. Choice B incorrectly multiplies exponents. Choice C incorrectly raises power. Choice D incorrectly reduces. On ACT Math, exponent rules are tested frequently: multiply = add exponents.

Absolute value equation: x−4=6x-4=6 or x−4=−6x-4=-6. Solve first: x=10x=10. Second: x=−2x=-2. Solution set = {-2,10}. Correct answer: B. Others reflect ignoring one solution or mis-solving signs. ACT Math often includes absolute value—always split into two cases.

In “neither/nor,” the verb agrees with the subject nearest to it. Here, “players” is plural, so “are” is correct. Choice A incorrectly uses singular. Choice C uses past tense unnecessarily. Choice D is not a finite verb. ACT English regularly tests these agreement structures.

Formula: A=πr2A=\pi r^2. Given 36π=πr236\pi=\pi r^2. Cancel π\pi: 36=r236=r^2. Square root: r=6r=6. Choice B is correct. Others are distractors from squaring incorrectly. ACT Math frequently includes circles—memorize area πr2\pi r^2 and circumference 2πr2\pi r.