Someone pls help I'm desperate 4. Consider the parabola y = kx² + 3x + 10 and the line y = -5x + 3. Determine the value of k in
each case.
a) The line intersects the parabola at two points.
b) The line intersects the parabola at one point.
c) The line does not intersect the parabola.​

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost

Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?