Help needed. Please find the mode of operation ( method of solving.) for each of the question.

Please show workings

One of the solutions to x2 - 2x – 15 = 0 is x = -3. what is the other solution? ox=-5 ox= -1 0 x=1 x = 5

Suppose jose bars 4 pounds of sausage that cost $8.79 per pound a bottle of mustard that cost $1.38 and two loaves of cuban bread that cost $3.99 each how much did jose spend in all

Bill earns $12 per hour and works at most 40 hours per week. identify the independent and dependent quantity in the situation, and find reasonable domain and range values