Which of these is a point-slope equation of the line that is perpendicular to y-25=2(x-10) and passes through (-3,7)

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c