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Subtract 5 from both sides: 2x = 12. Divide by 2: x = 6. Algebraic problem solving is foundational in SAT Math, testing manipulation of equations and variables.

Hypotenuse = √(9² + 12²) = √(81 + 144) = √225 = 15. SAT Geometry emphasizes Pythagorean applications.

Other leg = √(25² – 15²) = √(625 – 225) = √400 = 20. Pythagorean theorem problems are common in SAT Geometry.

200 × 0.45 = 90. SAT data analysis tests percent calculations.

Vertex formula: x = –b/2a = –(–8)/(4) = 2. f(2) = 2(4) –16 +6 = 8–16+6 = –2. Minimum value is –2. SAT “Advanced Math” includes quadratic optimization.