How many terms does the following sum have when it is written in standard form: (4x9 – 3x2 – 4) + (4x9 + x3 + 2x)? a. 7 b. 5 c. 3 d. 1

I'm confused on this could anyone me and show me what i need to do to solve it.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a