What is the 30th term in a sequence given by the explicit function: a(n) = -1 + (n-1)2

Can (2,3 and square root 10) be sides ona right triangle?

Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250

Based on the diagrams, what is the value of x?