Simplify as much as possibe. assume all variables are positive.. this is for algebra 2. i started it but i think its wrong

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.

The angle of depression from the top of the tree to the tip of the shadow is 25°. find the height of the tree to the nearest tenth. a. 16.8 feet b. 18.2 feet c. 23.4 feet d. 39.7 feet

Grace paid $1.70 for 5 ounces of candy. how much did she pay for 24 ounces?