Match the vocabulary word to its correct definition.
1. algebraic expression
a letter or symbol used to represent an unknown
2. coefficient
a numerical value
3. constant
a mathematical expression containing one or more variables
4. expression
the constant preceding the variables in a product
5. variable
a mathematical phrase that cannot be determined true or false

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)