Home > Algebra > Expressions with One or More Variables

How do you evaluate the expression 5x + 5y + 9y + 2x + y if x=8 y=3?

Answer 1

Hazel Anglin

#101#

#"simplify the expression by collecting like terms"#

#rArr5x+2x+5y+9y+y=7x+15y#

#"substitute the given values for x and y into the"# #"simplified expression"#

#=(7xxcolor(red)(8))+(15xxcolor(blue)(3))#

#=56+45=101#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Jameson Allen

To evaluate the expression 5x + 5y + 9y + 2x + y when x=8 and y=3, you substitute the values of x and y into the expression and perform the arithmetic operations.

So, 5x becomes 5(8) = 40, 5y becomes 5(3) = 15, 9y becomes 9(3) = 27, and 2x becomes 2(8) = 16.

Then, add all the results together: 40 + 15 + 27 + 16 + 3 = 101.

Therefore, the value of the expression 5x + 5y + 9y + 2x + y when x=8 and y=3 is 101.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.