1 Evaluate the expression 2a + b - 3 when a=5 and b=2. Please click on "show your work" to set up the problem and show your work. Then, enter your answer in the box to the right. You must complete both of these steps. Evaluate the expression 2a + b - 3 when a=5 and b=2. Set up the expression and show your work.

11

or

2(5)+2-3

Step-by-step explanation:

if a = 5 and b=2,

you add it into the expression.

2a + b -3 --> 2(5) + 2 - 3

all you have to do is replace the letters with the (given) numbers.

then, solve.

2(5) = 10

2-3= 1

10+1 =11

the answer is 11.

:)

The answer will be 9

Step-by-step explanation:

you should just replace the letters with numbers.

I will show you the process,

2a+b-3

=2(5)+2-3

=10+2-3

=12-3

=9

:: The answer is 9.

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

(23*2)-12=x     x=34

step-by-step explanation: