A recipe for apple crisp uses 4 parts oats,8 parts brown sugar, and 10 parts flour. In simplest form, how many parts of brown sugar are there for every part of flour? A.4/5
B.1/2
C.2/5
D.1/4

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?