How do I write the opposite of the square root of 7 as an expression using symbols?

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Kevin?

An airline finds that 5% of the persons who make reservations on a certain flight do not show up for the flight.

Austin correctly answered 92% of the questions on the geography quiz. Liz and third 47 of the 50 questions correctly who earned a higher score? Explain.

If f (x) = 3x - 2 and g (x) = 2x + 1, find (f - g) (x). A. 3 - x B. 5x - 1 C. 5x - 3 D. x - 3

An airplane flies at a constant speed. It can travel a distance (d) of 1,800 kilometers in 2 hours (t).

An athletic field currently has a width of 100 yards and a length of 60 yards. The school plans do expand both the length and the width of the field by x yards. What polynomial in standard form represents the area of the expanded athletic field?

A 13 foot ladder is placed 5 feet away from my wall. The distance from the ground straight up to the top of the wall is 13 foot. Will the ladder reach the top of the wall?

What is 23 (1/2) + 1? ty if yu halp meh <.

Which step could be used to solve x+3.6=-1.7 for x in one step?

Shorty's gross pay last week was $251.20. if her hourly rate was $7.85, how many hours did she works?