Skylar buys a total of 15 hats and t-shirts. Hats are $7 each and t-shirts at $12 each. He spends a total of $155 write a system of equations.

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

Which number completes the inequality? 2/3 < _ < 7/9

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265