Chris placed an order for 30 chairs with the furniture store. He ordered metal chairs at $25 each and plastic chairs at $10 each. His order totaled $450. How many of each chair did he order?

9/10 divide by -3/15 as a mixed number

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.