If the concentration x(t) of a certain reactant in a chemical reaction changes according to the relation x'(t) = 0.3x(4-x), find the concentration at which the reaction rate is a maximum.

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The verbal translation for the difference of m and 7 increased by 15

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.