Ineed to know asap

i know this is probably easy but i don’t understand it.

1.7x10^3 in 1 decimal place not in standard form

would it be something like 1.06

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.