A certain element decays at a constant rate of 3% per year. If you start with 15 grams of the element, how long will it take before there are only three grams left

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?