Acar travels 20mph slower in a bad rain storm than in sunny weather. the car travels the same distance in 2hr in sunny weather as it does in 3hr in rainy weather. find the speed of the car in sunny weather.

Solve: 3x+y=6 4x-2y=18 show all work !

Ihave trouble finding the nth term of a linear sequence

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)