Evaluate the function at the indicated values. (If an answer is undefined, enter UNDEFINED.) f(x) = x2 + 7x
f(0) =

f(3) =

f(−3) =

f(a) =

f(−x) =

f

1
a

=

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Which of the following is correct interpretation of the expression -4+13

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .