What is the greatest common factor of 48 and 68

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account