Jeremy is 15 years old. his father is 4 times as old as him now. in how many years time will their total age be 115 years?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2