To add 6.53 + 1.28, adjust 1.28 to make it
easier to add.

7.81 is the answer

Step-by-step explanation:

If you move the "." being the decimal in 1.28 to the end, you make it 128.

Then you take the "." in 6.53 to the end and get 653

add 128 and 653 to get 781.

When you are done, you take the decimal at the end and move it to the left two places to get 7.81

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer