What is the image of the point (0, 9) after a rotation 90° clockwise about the origin?
a (0, –9)
b (9, 0)
c (9, 9)
d (–9, 0)

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.