The ratio of parents, students and teachers is 21:3:6.
What proportion of the total is parents?
GIVE ANSWER IN PERCENTAGE.

The expression 20l+25g-10 calculates the number of dollars that the abc lawn company. how many dollars does the company make from raking 444 gardens and mowing 333 lawns

Place the following steps in order to complete the square and solve the quadratic equation,

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?