Jin has a granddaughter named wei. jin's age is 2 more than 7 times wei’s age, in years. jin’s age is 86 years old. write and solve an equation to find w, wei’s age in years.

Find the nonpermissible replacement for binthis expression.b2/5b +5

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.