Which of the following when added to 4x²+ 9 will result in a perfect square for all integer values of a?

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?

Marking brainliest for original answer.. are these two triangles similar? how can you tell?