please share idea solution

Please download
Handouts_General Mathematics.pdf 
Course Title General Mathematics and Biostatistics
Course Code STA100
Activity Assignment # 2
Submission Deadline Date: Saturday, Feb 02, 2020
Time: 23:59 Hours (Midnight)Instructions to attempt assignment:
• For writing symbols, use Math Type software. If you already did not download it.
• Use calculator for calculations.
• Write the complete formulas and all steps, wherever necessary.
• Make your own attempt, any copy/past; cheating from other student/website may result in ZERO marks and/or assignment cancelation.Question # 1:
Observation Number Temperature (x) Yield (y) 1 50 122 2 53 118 3 54 128 4 55 121 5 56 125 6 59 136 7 62 144 8 65 142 9 67 149 10 71 161 11 72 167 12 74 168 13 75 162 14 76 171 15 79 175
Consider the data obtained from a chemical process where the yield of the process is thought to be related to the reaction temperature (see the table below).Draw a best fit line which is obtained by solving simultaneously “Normal Equations”.
Question # 2:
Ice Cream sale vs Temperature Temperature 14.2° 16.4° 11.9° 15.2° 18.5° 22.1° 19.4° 25.1° 23.4° 18.1° 22.6° 17.2° Ice Cream Sale $215 $325 $185 $332 $406 $522 $412 $614 $544 $421 $445 $408
The local ice cream shop keeps track of how much ice cream they sell versus the temperature on that day to find out Correlation, here are their figures for the last 12 days: 
Course Title General Mathematics and Biostatistics
Course Code STA100
Activity Assignment # 1Instructions to attempt assignment:
• For writing symbols, use Math Type software. If you already did not download it.
• Use calculator for calculations.
• Write the complete formulas and all steps, wherever necessary.
• Make your own attempt, any copy/past; cheating from other student/website may result in ZERO marks and/or assignment cancelation.Question # 1
Solved by Crammer Rule
Question # 2
Find the general term and the eleventh term of the A.P. who’s first term and the common difference are 2 and 3 respectively. Also write its first four terms.