Simplify this expression

4n²+7n+5n²+9n+8

The Museum of Science in Boston displays a running total of the U. S. population. on may 11, 1993, the total was increasing at the rate of 1 person every 14 sec. the displayed population figure at 3:45 PM. that day was 257,313,431.

What is the square root of 4 to 256

The local high school football team will be playing in the state championship. The coach has free tickets that he will be distributing to 52 football players for their friends and families.

Lawrence has 10 coins in his pocket. one coin is a quarter, and the others are all nickels or dimes. the coins are worth 90 cents

Which equation Can pair with x-y=-2 to create a consistent and dependent system A) 6x+2y=15 B) - 3x+3y=6 C) - 8x-3y=2 D) 4x-4y=6

The square root of a 100 is it a whole number or natural number

How do u expand 500,000

How does the volume of a sphere with radius 2cm compare to the volume of a sphere with radius 1cm

6 yards to 36 yards. Find the percent of change. Round to the nearest tenth of a percent if necessary.

Mark, evan, and cayla are playing a game. there are 3 blue marbles, 2 red, and 1 green marble. if mark pulls a blue marble he gets $1. if evan pulls a red marble, he gets a $2. if cayla pulls a green marble, she gets $3.