The cost of a telephone call is $0.75 + $0.25 times the number of minutes. write an algebraic expression that models the cost of a telephone call that lasts t minutes

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

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ