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level GPage 79%u00a9 RALLY! EDUCATION. NO PART OF THIS DOCUMENT MAY BE REPRODUCED WITHOUT WRITTEN PERMISSION OF THE PUBLISHER.Math Rehearsal%u00ae Plus Instruction for the STAAR%u00ae Test2))bLINEAR EQUATIONSSlope-intercept form y mx b = +Constant of proportionality k yx =CIRCUMFERENCECircle C r = 2%u03c0 or C d = %u03c0AREATriangle A h = 12 bRectangle or parallelogram A h =Trapezoid A b + 12 1 = (b hCircle A = %u03c0 2 rVOLUMEPrism V Bh =Pyramid V Bh = 13ADDITIONAL INFORMATIONPi or %u03c0 %u2248 227 %u03c0 %u2248 3 14 .Distance d rt =Simple interest I Prt =Compound interest AP r t = + (1
