Aline passes through the point (-8, 7) and has a slope of negative 3/4

write an equation in slope-intercept form for this line.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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?

Math it's appreciated. (picture provided)