The circumference of a roll of party streamers is 10 inches. The circumference decreases by 4 inches after you use the streamers to decorate for a holiday party. Find the diameter of the roll after the decrease. Round your answer to the nearest hundredth. I'll also give brainlest along with 39 points! QUICKLY I HAVE 15 MINUTES!

When only separate discreet points are graphed it is called?

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Evaluate the expression. (9 + 5)(3 + 2)0