Find the missing side using Pythagorean Theorem
X =
20 yd
21 yd

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?

Identify the parent function that can be used to graph the function f(x)=3(x-9)2

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me