How many solutions for x does the following equation have?

2(x + 4) − 1 = 2x + 7
a. 1
b. 7
c. 0
d. infinite

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

The graph is supposed to show f(x) = 3 sin (x/4+1) - 1/2. which of the following are correctly represented in the graph? select two of the following that apply.

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5