What is the following product? 5 squared 4x^2 • 5 squared 4x^2

4x^2
5 squared 16x^4
2(5 squared 4x^2)
16x^4

I’m thinking it might be the first one? Someone please help :(

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.