Can somebody plz help solve these 2 word problems (only if u know how to do them) and show the equation! Thx :3 WILL MARK BRAINLIEST WHOEVER CAN ANSWER FIRST :DDD

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?