i need help on 10,11 and 12

EXP Assignment Booklet 7 11. The PH of a solution can be determined using the formula PH = -log | H* ], where His the Assignment Booklet 7 Unit 7: Logarithmic FI Unit 7: Logarithmic Functions The hydrogen ion concentration of a solution is 0.008 mol/L. Calculate the pH of the 10. The Spanish flu was a worldwide epidemic that began in 1918 and lasted approximatel hydrogen ion concentration in the solution. During the first few months of the epidemic, the flu spread rapidly through a Canadian shown in the table below. solution, to the nearest tenth. (1 mark) a. Time (months) Number of Confirmed Cases 150 345 b. A baking soda solution has a pH of 8.9. Algebraically determine the hydrogen ion 828 concentration of this solution. Show all your work and express your answer in scientific 2484 6707 4084 notation to the nearest tenth. (2 marks) a. Determine the equation of the exponential regression function, in the form C = ab' , that models the number of confirmed cases, C, as a function of time, t. Express the values o a and b to the nearest hundredth. (2 marks) Use the exponential regression equation to determine the time that it will take, to the nearest 12. Patterns and Games: Describing Number Patterns tenth of a month, for the number of confirmed cases to equal 20 000. Show or explain how you found the answer for full marks. (2 marks) Three rows of a number pattern are shown below. Row 1 1x10+1=11 Row 2 12x10+ 2=122 Row 3 123x10+3=1233 c. Determine the equation of the logarithmic regression function t = a + bIn C, that models a. Identify and describe the pattern used in the first three rows. (1 mark) time, t, as a function of confirmed cases, C. Express the values of a and b to the nearest hundredth. (2 marks) b. Use the pattern you described above to write out Row 9. (1 mark) Use the logarithmic regression equation to determine the time it will take, to the nearest tenth marks. (2 marks) of a month, for the number of confirmed cases to equal 20 000. Show your work for full End of Assignment ADLC Mathematics 30-2 ADLC Mathematics 30-2