Simone planted a tomato plant and measured its height weekly. The total height at 2, 3, 4, and 5 weeks respectively were 13, 16, 19, and 22 inches tall. How tall was the tomato plant when Simone planted it? Round your answers to the hundredths place, for example 2.50in, no spaces.

Assume the relationship is linear.
again plz help due tmr