Which expression is a polynomial?

a. 9x^7y^-3z

b. 4x^3-2x^2+5x-6+1/x

c. - 13

d. 13x^-2

Marcus estimates that 230 people will attend the choir concert. There was an actual total of 300 people who attended the choir concert. What is the percent error

Dolores is selling cucumbers from her backyard garden her garden is 48 square feet in total and she can grow 1 cucumber every 72 square inches if she can successfully grow cucumbers in every square foot of the garden and sell them for $2.

What is 373727282 divided by 23

What is X = to in - 3x+4x=2•4-x

Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.

In a multipack of crisps there are 6 salt and vinegar, 9 ready salted and 6 cheese and onion. Write the ratio of salt & vinegar : ready salted : cheese and onion in its simplest form.

What is the product of 5.86 x 10-7 and 3.1 x 104 1. Write the expression: (5.86 x 10-7) (3.1 * 104) 2. Rearrange the expression: (5.86 * 3.1) (10-7. 104) 3. Multiply the coefficients: (18.166) (10-7. 104) 4. Apply the product of powers: 18.

Find the vertex of this parabola y=-5x^2-10x-13

Mike performed 139 more community service hours than Natasha. If Mike finished 220 hours of community service, how many hours did Natasha complete? 81 hours 91 hours 181 hours 259 hours

A Dog Sled Driver Added More Gear To The Sled Doubling Its Weight This Felt Too Heavy So The Driver Removed 20 Pounds To Reach The Final Weight Of 180 Pounds Write And Solve An Equation To Find The Sleds Original Weight Describe How You Could Find