Introduction to Algebra

If a is the total water bottles inside the cardboard and b is the total water inside the plastic, the algebraic expression to represent the total water bottles based on the figure is ....

$$5x\ -7y\ +\ 9$$

Based on the expression above, which statement is correct?

$$7x\ -4y\ +9z\ -3$$

Based on the expression above, which one is the constant?

$$2p\ +\ 7q\ -5r$$

Based on the expression above, the constant is 0.

$$4c\ -8d\ +7e\ -2$$

The total of all coefficients from the expression above is ....

$$2x^2-5x+3$$

The variable in the expression above is ...

Term that has a coefficient of x² equal to 1 and a coefficient of x equal to 3 is ...

The correct expression for the statement below is ...

"Add 5y to the product of a and b"

Choose the correct expression for the statement below!

"Subtract 4 times the square of z from thrice of x"