Mary is 21 years old. her age is 9 years more than 3 times henry’s age. which equation can be used to determine x, henry’s age in years?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.