Angle a is twice the size of angle b. their sum is 87 degrees. find x (2x-1) belongs to angle b

How do you determine whether a relationship represented as as graph is linear or nonlinear

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?