The average heights of water spinaches can reach up to 35cm with standard deviation twice than the water spinaches without fertilizer. Water spinach with height greater than 40 cm is considered as very tall. A new batch of water spinaches is applied with fertilizer and one water spinach is selected at random. b) Find the probability that the water spinach height is more than 45 cm but less than 55 cm. c) Half of very tall water spinach's new batch recorded heights greater than h cm. Find the value of h.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.