The expression 3(-2m+5) - 2 can be written in the form am + b. What is the value of a + b

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.