1. Keneth pagó un impuesto de 7% por un equipo de CD que costaba $180 ¿Qué ecuación se puede usar para hallarn, (el impuesto sobre la venta)?
a) $180 - 0.07 = n
b) $ 180 x 0.07 = n
c) $180 + $ 7=n
d) n = 7 x $180​

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)