Max is stacking logs at his campground for firewood. after his first load of logs, he has 9 logs on the stack. after his seventh load of logs, he has 51 logs on the stack. use sequence notation to represent the arithmetic function.
a an = 51 + 6(n − 1)
b an = 9 + 6(n − 1)
c an = 51 + 7(n − 1)
d an = 9 + 7(n− 1)

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.