HELO PLEASE I NEED JT

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Sylvia rented a boat for $16.50 per hour. her total rental fee was $49.50. for how many hours did sylvia rent the boat

Which statements are always true regarding the diagram? check all that apply. m3+ m 4 = 180° m2 + m 4+ m26 = 180° m2 + m 4 = m 25 m1+ m2 = 90° m4+ m6 = m22 m2 + m 6 = m 25