Please help me with my math homework

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the