How to do equations

math

Dylan owes half as much money as he used to owe. If he used to owe $28, which of the following expressions would reflect how much money Dylan has now?

If the cos of angle x is 8/17 and the triangle was dilated to be two times as bog as the original, what would be the value of the cos of x the dilated triangle?

Interest paid on the original principal is known as simple interest. True False

If an oxygen atom has 8 protons and 10 neutrons in its nucleus, what is its atomic number? 10 8 not enough information to calculate 18

A skater goes 57 m in 13 seconds. What is her speed?

Carla has a credit card that uses the average daily balance method. For the first 15 days of a 31-day billing cycle, her balance was $2560, but then she paid off her entire balance and didn't make any new purchases.

The expression x^2 + x + b is a perfect square trinomial. What is the value of b?

Solve the equation by factoring: 3x^2 + 22x - 16 = 0

If a 10 foot piece of electrical tape has 0.037 feet cut from it, then what is the new length of the tape?

Josue has to solve the equation - 4x+8=2x+10. He notices he can first divide every term by factor of 2 to make the equation easier to solve. Using Josue's strategy, which equation will result?