Solve the equation 6x + 3y = 15 for y. what does y equal if x = 2? if x = 5

The probability of winning something on a single play at a slot machine is 0.11. after 4 plays on the slot machine, what is the probability of winning at least once

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?