5+ 3h - (h - 5) + 12h how do i simplify this?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.