Ten times a number plus four time another number equal -5 the sum of the two numbers is a negative eight what are the numbers?

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?