NO LINKS AND NO WEBSITES I really need help with this, and also if it's Substitution or linear combination.

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2