Which expression is equivalent to -13(6x+15)-3

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

Which of the following circles have their centers in the third quadrant? check all that apply.