How do you calculate the price per square foot

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7

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?