Alvin has 75 dollars in his piggy bank. Every week he spends 5 dollars at the store. How Many weeks until he has 55 dollars in his piggy bank?

Nine more than four times a number is the same as one less than twice the number. find the number?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°