Mr. Huizar is old, when he was a teenager it costed $30 a month for cell phone service and 25 cents (0.25) for every text message he sent. How
much would his bill be if he sent 500 text messages?

Nine more than four times a number is the same as one less than twice the number. find the number?

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?