PLEASE HELP!! 10 POINTS!

Solve the system of equation using substitution

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Question 6(multiple choice worth 5 points) (05.02 lc) what is the value of x? a right angle is shown divided into two parts. the measure of one part of the right angle is 10 degrees. the measure of the other part is 2x 20 40 45 85