"the highest common factor (hcf) of my two numbers is 3 the lowest common multiple (lcm) of my two numbers is 45" (b) write down two numbers that james could be thinking of.

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Anyone know? will mark brainliest if correct

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