Determine the number of possible solutions for a triangle with a= 30 a=20 and b=16

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Which of the following represents the factorization of the trinomial below? x^2+7x-30

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?