Due to erratic sales of its sole product- a high-capacity battery for laptop computers- PEM, Inc., has been experiencing financial difficulty for some time. The company's contribution format income statement for the most recent month is given below: Question 5 3.6pts The marketing department believes a fancy new package for the laptop computers will grow sales. The fancy packaging would increase packaging costs by $.70 per unit. Assuming no other changes, how many units would need to be sold in order to obtain target profit of $4,500 ? (Round your answer to the nearest whole number.)