Which expression can go in the blank to make the equation true? -4.5 + 4.4 + ? = 0 a) -6.7 +6.8 b) -6.7 + (-6.6) c) 7.2 + (-7.2) or d) 7.2 + -7.2 + (-7.3)

Marcus built a model car that is 4 inches wide. what scale was used to build the car if the actual width of the car is 6 feet? a. 1 in. = 2 ftb. 1 in. = 2.5 ftc. 1 in. = 1.5 ftd. 1 ft = 1.5 in.

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Find dy/dx using implicit differentiation ln(20+e^xy)=y