If 3^x=10, what is the value of 3^x-3? A. 10/3 B. 10/9 C. 10/27 D. 27/10

2÷6+1/2 to the second power plus one

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?

With alll of except for the 2 that i did already